Đề thi THPT Quốc gia môn Tiếng Anh - Mã đề 101 - Năm học 2018-2019 - Trường THPT Quỳ Hợp I (Kèm đáp án)

Nội dung text: Đề thi THPT Quốc gia môn Tiếng Anh - Mã đề 101 - Năm học 2018-2019 - Trường THPT Quỳ Hợp I (Kèm đáp án)

1. TRƯỜNG THPT QUỲ HỢP I KỲ THI TRUNG HỌC PHỔ THÔNG QUỐC GIA NĂM 2018 - 2019 ĐỀ THI THỬ 12A3 Môn: TIẾNG ANH ĐỀ 101 Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. Question 1: A. stopped B. decided C. worked D. washed Question 2. A. valentine B. discipline C. determine D. imagine Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. Question 3. A. promote B. profess C. product D. provide Question 4. A. property B. regular C. different D. achieving Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. Question 5. I’d prefer to do it on myself, because other people make me nervous. A. I’d prefer B. on myself C. other D. make Question 6. The continental shelves in the shallow area of the ocean floor is closet to the continents. A. shelves B. of C. ocean floor D. closet to Question 7. The average adult get two to five colds each year. A. The B. get C. to D. colds Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 8. Since our train leaves at 10.30, it is ___that everyone be at the station no later than 10.15. A. urgent B. inescapable C. desired D. imperative Question 9. Insects and bugs ___. A. make my skin march B. make my skin turn C. make my skin crawl D. make my skin walk Question 10. Mrs. Robinson ___ great pride in her cooking. A. has B. finds C. gets D. takes Question 11. The fastest runner took the ___ just five metres before the finishing line. A. advance B. lead C. place D. head Question 12. The teacher as well as his students___ at the school meeting yet. A. arrived B. hasn’t arrived C. haven’t arrived D. not arriving Question 13. If I had been absent from class yesterday, I___ the math test A. would miss B. would have missed C. will miss D. miss Question 14: Tennis fans ___ tickets have been queuing all night at Wimbledon. A. who are hoped to buy B. whom hoped to buy C. hoping to buy D. hoped to buy Question 15. We’re free most of the weekend, but we’ve got a few bits and ___to do on Sunday morning. A. stuff B. ends C. things D. pieces Question 16. Ann pretended ___ me as he passed me in the street. A. not seeing B. not to seen C. not see D. not to see Question 17. My daughter plays ___ piano very well. A. the B. a C. X D. an Question 18. . In this course, students receive ___ in the basic English grammar. A. instruct B. instructional C. instruction D. instructive Question 19. In the early years of the 20th century, several rebellions broke___in the northern parts of the country. A. down B. up C. out D. into Question 20. I have just bought a television set __ in Japan. A. which made B. in which made C. who is made D. made Question 21 she got the salary last week, she has complained that she is out of money. A. Unless B. Even though C. In case D. As Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question 22. Marcelo: "Reese, make us some tea, would you?" - (#Name2): "___." A. Go on. Make yourself at home B. No, I won't, I'm afraid Mã đề 101 Trang 1
2. C. Sorry, I am not D. I'm afraid I can't Question 23. Esme: "Do you have a minute?" - Kailyn: "___." A. Well, that makes sense B. Yes, but please be brief C. That's just great. Thanks D. Sorry, I left my watch home Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. Question 24. Our team must develop a new strategy in order to deal with the serious problem. A. expand B. grow C. arise D. invent Question 25. Several hypotheses for global warming have been suggested by the scientists. A. supposition B. study C. research D. truth Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question 26. The band had an outstanding performance at the Grand Theatre last night. A. good B. excellent C. gentle D. bad Question 27. The writer was really hot under the collar when his novel was mistaken for another. A. angry B. worried C. calm D. curious Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions. Question 28. Bill drives more carelessly than he used to. A. Bill doesn’t drive as carefully as he used to B. Bill doesn’t more drive carefully than he used to C. Bill doesn’t drive as carefully he used to D. Bill doesn’t drive as carefully as he used Question 29. “What were you doing last night, Mr John?” asked the police. A. The police asked what were you doing last night, Mr John B. The police asked Mr John what he had been doing the night before C. The police asked Mr John what he had been done the night before D. The police asked Mr John what had he been done the night before Question 30. It wasn’t necessary for you to do all this work. A. You mustn’t have done all this work. B. You couldn’t have done all this work C. You may not have done all this work D. You needn’t have done all this work Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions. Question 31. He started computer programming as soon as he left school. A. No sooner had he started computer programming than he left school. B. Hardly had he started computer programming when he left school. C. No sooner had he left school than he started computer programming. D. After he left school, he had started computer programming. Question 32. Susan did not buy that villa. She now regrets it. A. Susan wishes she had bought that villa. B. Susan regrets having bought that villa. C. If only Susan didn’t buy that villa. D. Susan wished she hadn’t bought that villa. Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 33 to 37. When you first arrive in a foreign culture, often your first reaction is completely positive. Everything seems exciting, different and fascinating. It’s an (33)___. If you are just on a short holiday, you will probably never leave this phase. (34)___, if you stay longer, your attitude can start to change. As you start to realize (35)___ little you really understand the new culture, life can get frustrating. People misunderstand what you are trying to say, or they may laugh at you when you say something incorrectly. Even simple things, like posting a letter, can seem very difficult to you. Thus, you are likely to get angry or upset when things go wrong. With time, though, you start to (37)___ to become more comfortable with the differences and better able to handle frustrating situations. Your (37)___ of humor reappears. Finally, you may feel enthusiastic about the culture once again, enjoy living in it, and even prefer certain aspects of the culture to your own. (Adapted from Navigate – Coursebook, OUP 2015) Question 33. A. adventure B. adventurous C. adventurer D. adventurously Question 34. A. Therefore B. Or C. However D. Nor Mã đề 101 Trang 2
3. Question 35. A. whether B. how C. if D. what Question 36. A. replace B. maintain C. adjust D. keep Question 37. A. taste B. sense C. touch D. sound Choose the item (A, B, C or D) that best completes the unfinished statement. Sometimes people add to what they say even when they don't talk. Gestures are the "silent language" of every culture. We point a finger or move another part of the body to show what we want to say. It is important to know the body language of every country or we may be misunderstood. In the United States, people greet each other with a handshake in a formal introduction. The handshake must be firm. If the handshake is weak, it is a sign of weakness or unfriendliness. Friends may place a hand on the other's arm or shoulder. Some people, usually women, greet a friend with a hug. Space is important to Americans. When two people talk to each other, they usually stand about two and a half feet away and at an angle, so they are not facing each other directly. Americans get uncomfortable when a person stands too close. They will move back to have their space. If Americans touch another person by accident, they say, "Pardon me." or "Excuse me." Americans like to look the other person in the eyes when they are talking. If you don't do so, it means you are bored, hiding something, or are not interested. But when you are stare at someone, it is not polite. For Americans, thumbs-up means yes, very good, or well done. Thumbs down means the opposite. To call a waiter, raise one hand to head level or above. To show you want the check, make a movement with your hands as if you are signing a piece of paper. It is all right to point at things but not at people with the hand and index finger. Americans shake their index finger at children when they scold them and pat them on the head when they admire them. Learning a culture's body language is sometimes confusing. If you don't know what to do, the safest thing to do is to smile. Question 38. From the passage we can learn that___. A. gestures don't mean anything while talking B. It's confusing to understand a culture's body language C. gestures can help us to express ourselves D. American people often use body language in communication Question 39. If you are introduced to a stranger from the USA, you should ___. A. greet him with a hug B. place a hand on his shoulder C. shake his hand weakly D. shake his hand firmly Question 40. The word “them” in paragraph 2 refers to . A. Americans B. children C. fingers D. people Question 41. When your friend give you a thumbs-up, he, in fact, . A. shows his rudeness to you B. shows his anger to you C. expresses his satisfaction to you D. expresses his worries about you Question 42. The word “accident” in paragraph 2 is closest in meaning to . A. chance B. mishap C. misfortune D. disaster Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people. Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached. Mã đề 101 Trang 3
4. Electrons are negatively charged particles. They are bound to their atoms through electromagnetic attraction. Opposite electrical charges attract one another, so the positive charge of the proton helps to keep the negatively charged electron in orbit around the nucleus of the atom. Electrons are different from neutrons in that they cannot be broken down into smaller particles. They are also far smaller and lighter than neutrons and protons. An electron is about one thousandth of the diameter of a proton and an even smaller fraction of its mass. Electrons circle the protons and neutrons at the center of the atom in orbits. These orbits are often called electron shells. The closer the orbit is to the center of the atom, the lower its energy is. There are seven electron shells, and each higher level can hold more electrons than the previous shell. Electrons naturally seek to occupy the lowest shell possible. So, if there is space in a lower shell, an electron will drop down to occupy that space. At temperatures higher than a few hundred degrees, electrons will gain energy and move to a higher shell, but only momentarily. When the electrons drop back down to their natural shell, they emit light. This is why fires and other very hot objects seem to glow. Electrons are also primarily responsible for many of the chemical properties of atoms. Since electrons seek to occupy the lowest electron shell possible, they will move from one atom to another if there is a space available in a lower electron shell. For example, if there is an atom with an open space in its third shell, and it comes into contact with an atom with electrons in its fourth shell, the first atom will take one of these electrons to complete its third shell. When this happens, the two atoms will be chemically bonded to form a molecule. Furthermore, atoms sometimes lose electrons in collisions with other atoms. When this happens, the radio of protons and electrons in the atom changes, and therefore, the overall electrical charge of the atom changes as well. These atoms are called isotopes, and they have significantly different chemical properties from their parent atoms. Question 43. In paragraph 1, why does the author compare the structure of an atom to a solar system? A. To provide an explanation of atomic structure that will be easily understood. B. To show the influence of atomic structure on the world at the observable level. C. To show that the complex mathematical formulas used to explain atomic structure are inaccurate. D. To contrast the size of atoms with the size of objects at the observable level. Question 44. According to paragraph 2, an atom's atomic number is determined by ___. A. the sum of its protons and electrons B. the difference in the mass of its neutrons and protons C. the strength of the bond between its protons and neutrons D. the total number of protons it has Question 45. The word "stable" in bold in paragraph 2 is closest in meaning to ___. A. neutral B. unchanging C. equal D. heavy Question 46. According to the information in paragraph 2, what will happen if an atom has more neutrons than protons? A. It will not have enough of a positive electrical charge to keep its electrons in orbit. B. Its extra neutrons will be converted into light energy. C. It will slowly give off neutrons until the atom becomes stable. D. Its nucleus will explode in a supernova. Question 47. The phrase "one another" in bold in paragraph 3 refers to ___. A. electrons B. electrical charges C. particles D. atoms Question 48. According to paragraph 3, when does an atom produce light? A. When it has more electrons than its electron shells can hold. B. When energy is added to the outermost electron shell. C. When an electron drops back to its original electron shell. D. When an electron is transferred from one atom to another. Question 49. According to the passage, all of the following are true of electrons EXCEPT ___. A. they are elementary particles and cannot be broken down B. they are considerably smaller than neutrons or protons C. their energy levels are fixed and unchanging D. they are kept in orbit by electromagnetic attraction Question 50. According to paragraph 4, which property of electrons is responsible for chemical bonding? A. Their electromagnetic attraction to protons B. Their tendency to occupy the lowest possible electron shell C. The fact that they cannot be broken into smaller particles D. Their ability to break free of their atom during a collision Mã đề 101 Trang 4
5. TRƯỜNG THPT QUỲ HỢP I KỲ THI TRUNG HỌC PHỔ THÔNG QUỐC GIA NĂM 2018 - 2019 ĐỀ THI THỬ 12A3 Môn: TIẾNG ANH ĐỀ 101 Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. Question 1: A. stopped B. decided C. worked D. washed Question 2. A. valentine B. discipline C. determine D. imagine Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. Question 3. A. promote B. profess C. product D. provide Question 4. A. property B. regular C. different D. achieving Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. Question 5. I’d prefer to do it on myself, because other people make me nervous. A. I’d prefer B. on myself C. other D. make Question 6. The continental shelves in the shallow area of the ocean floor is closet to the continents. A. shelves B. of C. ocean floor D. closet to Question 7. The average adult get two to five colds each year. A. The B. get C. to D. colds Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Question 8. Since our train leaves at 10.30, it is ___that everyone be at the station no later than 10.15. A. urgent B. inescapable C. desired D. imperative Question 9. Insects and bugs ___. A. make my skin march B. make my skin turn C. make my skin crawl D. make my skin walk Question 10. Mrs. Robinson ___ great pride in her cooking. A. has B. finds C. gets D. takes Question 11. The fastest runner took the ___ just five metres before the finishing line. A. advance B. lead C. place D. head Question 12. The teacher as well as his students___ at the school meeting yet. A. arrived B. hasn’t arrived C. haven’t arrived D. not arriving Question 13. If I had been absent from class yesterday, I___ the math test A. would miss B. would have missed C. will miss D. miss Question 14: Tennis fans ___ tickets have been queuing all night at Wimbledon. A. who are hoped to buy B. whom hoped to buy C. hoping to buy D. hoped to buy Question 15. We’re free most of the weekend, but we’ve got a few bits and ___to do on Sunday morning. A. stuff B. ends C. things D. pieces Question 16. Ann pretended ___ me as he passed me in the street. A. not seeing B. not to seen C. not see D. not to see Question 17. My daughter plays ___ piano very well. A. the B. a C. X D. an Question 18. . In this course, students receive ___ in the basic English grammar. A. instruct B. instructional C. instruction D. instructive Question 19. In the early years of the 20th century, several rebellions___in the northern parts of the country. Mã đề 101 Trang 5
6. A. turned out B. rose up C. broke out D. came up Question 20. I have just bought a television set __ in Japan. A. which made B. in which made C. who is made D. made Question 21 she got the salary last week, she has complained that she is out of money. A. Unless B. Even though C. In case D. As Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question 22. Marcelo: "Reese, make us some tea, would you?" - (#Name2): "___." A. Go on. Make yourself at home B. No, I won't, I'm afraid C. Sorry, I am not D. I'm afraid I can't Question 23. Esme: "Do you have a minute?" - Kailyn: "___." A. Well, that makes sense B. Yes, but please be brief C. That's just great. Thanks D. Sorry, I left my watch home Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. Question 24. Our team must develop a new strategy in order to deal with the serious problem. A. expand B. grow C. arise D. invent Question 25. Several hypotheses for global warming have been suggested by the scientists. A. supposition B. study C. research D. truth Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question 26. The band had an outstanding performance at the Grand Theatre last night. A. good B. excellent C. gentle D. bad Question 27. The writer was really hot under the collar when his novel was mistaken for another. A. angry B. worried C. calm D. curious Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions. Question 28. Bill drives more carelessly than he used to. A. Bill doesn’t drive as carefully as he used to B. Bill doesn’t more drive carefully than he used to C. Bill doesn’t drive as carefully he used to D. Bill doesn’t drive as carefully as he used Question 29. “What were you doing last night, Mr John?” asked the police. A. The police asked what were you doing last night, Mr John B. The police asked Mr John what he had been doing the night before C. The police asked Mr John what he had been done the night before D. The police asked Mr John what had he been done the night before Question 30. It wasn’t necessary for you to do all this work. A. You mustn’t have done all this work. B. You couldn’t have done all this work C. You may not have done all this work D. You needn’t have done all this work Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions. Question 31. He started computer programming as soon as he left school. A. No sooner had he started computer programming than he left school. B. Hardly had he started computer programming when he left school. C. No sooner had he left school than he started computer programming. D. After he left school, he had started computer programming. Question 32. Susan did not buy that villa. She now regrets it. A. Susan wishes she had bought that villa. B. Susan regrets having bought that villa. C. If only Susan didn’t buy that villa. D. Susan wished she hadn’t bought that villa. Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 33 to 37. When you first arrive in a foreign culture, often your first reaction is completely positive. Everything seems exciting, different and fascinating. It’s an (33)___. If you are just on a short holiday, you will probably never leave this phase. (34)___, if you stay longer, your attitude can start to change. As you start to realize (35)___ Mã đề 101 Trang 6
7. little you really understand the new culture, life can get frustrating. People misunderstand what you are trying to say, or they may laugh at you when you say something incorrectly. Even simple things, like posting a letter, can seem very difficult to you. Thus, you are likely to get angry or upset when things go wrong. With time, though, you start to (36)___ to become more comfortable with the differences and better able to handle frustrating situations. Your (37)___ of humor reappears. Finally, you may feel enthusiastic about the culture once again, enjoy living in it, and even prefer certain aspects of the culture to your own. (Adapted from Navigate – Coursebook, OUP 2015) Question 33. A. adventure B. adventurous C. adventurer D. adventurously Question 34. A. Therefore B. Or C. However D. Nor Question 35. A. whether B. how C. if D. what Question 36. A. replace B. maintain C. adjust D. keep Question 37. A. taste B. sense C. touch D. sound Choose the item (A, B, C or D) that best completes the unfinished statement. Sometimes people add to what they say even when they don't talk. Gestures are the "silent language" of every culture. We point a finger or move another part of the body to show what we want to say. It is important to know the body language of every country or we may be misunderstood. In the United States, people greet each other with a handshake in a formal introduction. The handshake must be firm. If the handshake is weak, it is a sign of weakness or unfriendliness. Friends may place a hand on the other's arm or shoulder. Some people, usually women, greet a friend with a hug. Space is important to Americans. When two people talk to each other, they usually stand about two and a half feet away and at an angle, so they are not facing each other directly. Americans get uncomfortable when a person stands too close. They will move back to have their space. If Americans touch another person by accident, they say, "Pardon me." or "Excuse me." Americans like to look the other person in the eyes when they are talking. If you don't do so, it means you are bored, hiding something, or are not interested. But when you are stare at someone, it is not polite. For Americans, thumbs-up means yes, very good, or well done. Thumbs down means the opposite. To call a waiter, raise one hand to head level or above. To show you want the check, make a movement with your hands as if you are signing a piece of paper. It is all right to point at things but not at people with the hand and index finger. Americans shake their index finger at children when they scold them and pat them on the head when they admire them. Learning a culture's body language is sometimes confusing. If you don't know what to do, the safest thing to do is to smile. Question 38. From the passage we can learn that___. A. gestures don't mean anything while talking B. It's confusing to understand a culture's body language C. gestures can help us to express ourselves D. American people often use body language in communication Question 39. If you are introduced to a stranger from the USA, you should ___. A. greet him with a hug B. place a hand on his shoulder C. shake his hand weakly D. shake his hand firmly Question 40. The word “them” in paragraph 2 refers to . A. Americans B. children C. fingers D. people Question 41. When your friend give you a thumbs-up, he, in fact, . A. shows his rudeness to you B. shows his anger to you C. expresses his satisfaction to you D. expresses his worries about you Question 42. The word “accident” in paragraph 2 is closest in meaning to . A. chance B. mishap C. misfortune D. disaster Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken Mã đề 101 Trang 7
8. into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people. Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached. Electrons are negatively charged particles. They are bound to their atoms through electromagnetic attraction. Opposite electrical charges attract one another, so the positive charge of the proton helps to keep the negatively charged electron in orbit around the nucleus of the atom. Electrons are different from neutrons in that they cannot be broken down into smaller particles. They are also far smaller and lighter than neutrons and protons. An electron is about one thousandth of the diameter of a proton and an even smaller fraction of its mass. Electrons circle the protons and neutrons at the center of the atom in orbits. These orbits are often called electron shells. The closer the orbit is to the center of the atom, the lower its energy is. There are seven electron shells, and each higher level can hold more electrons than the previous shell. Electrons naturally seek to occupy the lowest shell possible. So, if there is space in a lower shell, an electron will drop down to occupy that space. At temperatures higher than a few hundred degrees, electrons will gain energy and move to a higher shell, but only momentarily. When the electrons drop back down to their natural shell, they emit light. This is why fires and other very hot objects seem to glow. Electrons are also primarily responsible for many of the chemical properties of atoms. Since electrons seek to occupy the lowest electron shell possible, they will move from one atom to another if there is a space available in a lower electron shell. For example, if there is an atom with an open space in its third shell, and it comes into contact with an atom with electrons in its fourth shell, the first atom will take one of these electrons to complete its third shell. When this happens, the two atoms will be chemically bonded to form a molecule. Furthermore, atoms sometimes lose Mã đề 101 Trang 8
9. electrons in collisions with other atoms. When this happens, the radio of protons and electrons in the atom changes, and therefore, the overall electrical charge of the atom changes as well. These atoms are called isotopes, and they have significantly different chemical properties from their parent atoms. Question 43. In paragraph 1, why does the author compare the structure of an atom to a solar system? A. To provide an explanation of atomic structure that will be easily understood. B. To show the influence of atomic structure on the world at the observable level. C. To show that the complex mathematical formulas used to explain atomic structure are inaccurate. D. To contrast the size of atoms with the size of objects at the observable level. Question 44. According to paragraph 2, an atom's atomic number is determined by ___. A. the sum of its protons and electrons B. the difference in the mass of its neutrons and protons C. the strength of the bond between its protons and neutrons D. the total number of protons it has Question 45. The word "stable" in bold in paragraph 2 is closest in meaning to ___. A. neutral B. unchanging C. equal D. heavy Question 46. According to the information in paragraph 2, what will happen if an atom has more neutrons than protons? A. It will not have enough of a positive electrical charge to keep its electrons in orbit. B. Its extra neutrons will be converted into light energy. C. It will slowly give off neutrons until the atom becomes stable. D. Its nucleus will explode in a supernova. Question 47. The phrase "one another" in bold in paragraph 3 refers to ___. A. electrons B. electrical charges C. particles D. atoms Question 48. According to paragraph 3, when does an atom produce light? A. When it has more electrons than its electron shells can hold. B. When energy is added to the outermost electron shell. C. When an electron drops back to its original electron shell. D. When an electron is transferred from one atom to another. Question 49. According to the passage, all of the following are true of electrons EXCEPT ___. A. they are elementary particles and cannot be broken down B. they are considerably smaller than neutrons or protons C. their energy levels are fixed and unchanging D. they are kept in orbit by electromagnetic attraction Question 50. According to paragraph 4, which property of electrons is responsible for chemical bonding? A. Their electromagnetic attraction to protons B. Their tendency to occupy the lowest possible electron shell C. The fact that they cannot be broken into smaller particles D. Their ability to break free of their atom during a collision Mã đề 101 Trang 9