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A. By Lines: To help you become a writer, we offer you a home – study course. We will guide you through the course and show you how to make the most of your ability. Write and study when and where you want. It couldn't be easier.
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C. Firebirds: Fed up with sitting in your lunch hour wondering what to do? Get your sports clothes on and come to our centre with us for lunchtime basketball every day.
D. Latino Club: Dancing is great exercise! Join our free Basic Samba. After spending an hour having fun in a lively class, we're sure you'll want to book straight onto one of our courses after that!
E. Talking Theatre: If you'd like something new and interesting to do, why not join our group? We produce three shows a year for people in the city, which are always very popular.
1.Tom works in the office. He wants to do something that will keep him fit. He isn't sure what to do so he'd like to be able to try an activity before making a final decision. -> D
2. Sue is a cashier in a supermarket. She works a lot of hours at different times of the day and evening. She'd like to be able to do something creative in her own time. -> A
3. Maria is a student. She would like to do an activity during the day. She enjoys team games and wants to play regularly. -> C
4. David wants to take part in an activity that will give him plenty of contact with other people. He is confident and enjoys performing. -> E
5. Daisy has a busy and stressful job and wants to find a way of relaxing that she can also do at home. She wants to look better and feel better! -> B
1.At 11a.m tomorrow, he’ll be in . He …………..
A. video conferenced B. video conference C. will be conferencing
2. ……….. your laptop this evening ? May I borrow it to do my project homework?
A. Do you use B. Will you be using C. Were you using
3. Which TV programme ……….. at 9p.m tomorrow?
A. did you watch B. will you watch C. will you be watching
4. What…………….. in the year 2020?
A. am I doing B. will I be doing C. do I do
5. I hope you …………… when I arrive at 2 pm today.
A. didn’t work B. won’t be working C. don’t work
6. When she comes home late today, he …………… the dinner.
A. cooks B. is cooking C. will be cooking
2. Johnny told his mother he didn't know how to do that exercise.
3. My brother advised me not to come back before one o'clock
4. Mrs Brown told her daughter to cook it in butter.
5. The pupils told their teacher to give them better mark.
6. My friend asked me if I was going to leave the next day
7. My mother asked me if I had done my homework
8. I asked Bill what time he had gone to bed the previous night/ the night before
9. Paul said he had to go home then
10. The policeman said there was an accident 11. The children said they were waiting for the school bus
12. Mr Brown asked me if I had to go then
13. Tom asked me if I was going to visit my aunt the next day
14. The teacher asked his students to listen to her and not to make a noise
15. Mary told Helen she was tired of eating
16. Peter said that the sun always rises in the east
17. Samny told Jean she hadn't stolen his fur coat the previous day
18. Miss Lan told us we had to do our homework everyday
19. Bill asked his teacher if they would read the story
20. Vicky said he didn't know where Alice was 21. Harry said there wasn't much rain in the south of the country
22. Andrew asked Anne to turn the music down
23. He asked me how much I thought it would cost
24. He asked me if I could speak more slowly because he couldn't understand
25. She asked me if I had already reviewed all my lessons
26. The shopkeeper asked me to come in and look around and there wasn't no obigation to buy
27. She appologized for being late because the bus had broken down
28. Mary asked me if I could tell her why I was so sad
29. Jane asked her friend if her would find out when he last wrote to her
30. She told her daughter that she had to decide what she wanted to do
1. If I had enough money, I ................. abroad to improve my English.
A. will go B. would go
C. should go D. should have go to
2. The bench would collapse if they ................. on it.
A. stood B. stand C. standing D. stands
3. If it ................. convenient, let’s go out for a drink tonight.
A. be B. is C. was D. were
4. If you ................. time, please write to me.
A. have B. had C. have had D. has
5. I shouldn’t go there at night if I ................. you.
A. am B. was C. be D. were
6. If I ................. get a pole, I will go fishing.
A. can B. could C. may D. might
7. If you had the chance, ................. you go fishing?
A. did B. may C. would D. do
8. If you a................. choice, which country would you visit?
A. have B. had C. have had D. will have
9. She will accept the offer ................. you persuade her.
A. unless B. because C. provided that D. otherwise
10. ................. he would accompany you on the piano.
A. Supposing he were here B. Because he were here
C. Were he here D. Both A and C
Tim loi sai
1.Although she had (no) money (herself), she (succeeded in) building schools for (poor->the poor)
2.(My sister and i) (make) turns (laying->lay) the table (for meals)
3.Do you (get annoying) if your parents (ask) you (to help out->to help them) (in) your free time
4.(Even) on the most (careful) prepared (trip), problems (will sometimes->sometimes will) develop
2.My sister and i take turns laying the table for meals. Chị em tôi thay phiên nhau dọn dẹp cho bữa ăn
make-> take
3. Help sbd out" giúp ai đó vượt qua khó khăn, Câu này sai ở get annoying -> get annoyed
4. sometimes -> sometime
Read the passage and answer the following questions: Carbohydrates, which are sugars, are an essential part of a healthy diet. They provide the main source of energy for the body, and they also function to flavor and sweeten foods. Carbohydrates range from simple sugars like glucose to complex sugars such as amylose and 5 amylopectin. Nutritionists estimate that carbohydrates should make up about one-fourth to one-fifth of a person's diet. This translates to about 75-100 grams of carbohydrates per day.
A diet that is deficient in carbohydrates can have an adverse effect 10 on a person's health. When the body lacks a sufficient amount of carbohydrates it must then use its protein supplies for energy, a process called gluconeogenesis. This, however, results in a lack of necessary protein, and further health difficulties may occur. A lack of carbohydrates can also lead to ketosis, a build-up of ketones 15 in the body that causes fatigue, lethargy, and bad breath. 1. What is the main idea of this passage?
(A) Carbohydrates are needed for good health.
(B) Carbohydrates prevent a build-up of proteins.
(C) Carbohydrates can lead to ketosis.
(D) Carbohydrates are an expendable part of a good diet.
2. The word "function" as used in line 3 refers to which of the following?
(A) neglect
(B) serve
(C) dissolve
(D) profess
3. The word "range" as used in line 3 is closest in meaning to which of the following?
(A) probe
(B) proceed
(C) hail
(D) extend
4. In line 5, the word "estimate" could best be replaced by
(A) disbelieve
(B) declare
(C) calculate
(D) wonder
5. According to the passage, what do most nutritionists suggest?
(A) Sufficient carbohydrates will prevent gluconeogenesis.
(B) Carbohydrates are simple sugars called glucose.
(C) Carbohydrates should make up about a quarter of a person's daily diet.
(D) Carbohydrates should be eaten in very small quantities.
6. Which of the following do carbohydrates NOT do?
(A) prevent ketosis
(B) cause gluconeogenesis
(C) provide energy for the body
(D) flavor and sweeten food
7. Which of the following words could best replace "deficient" as used in line 9?
(A) outstanding
(B) abundant
(C) insufficient
(D) unequal
8. What does the word "this" refer to in line 13?
(A) using protein supplies for energy
(B) converting carbohydrates to energy
(C) having a deficiency in carbohydrates
(D) having an insufficient amount of protein
9. According to the passage, which of the following does NOT describe carbohydrates?
(A) a protein supply
(B) a necessity
(C) a range of sugars
(D) an energy source
10. The word "lack" in line 13 is most similar to which of the following?
(A) plethora
(B) shortage
(C) derivation
(D) commission
11. Which of the following best describes the author's tone?
(A) sensitive
(B) emotional
(C) informative
(D) regretful
12. Which of the following best describes the organization of this passage?
(A) cause and result
(B) comparison and contrast
(C) specific to general
(D) definition and example
Read the passage and answer the following questions:
Carbohydrates, which are sugars, are an essential part of a healthy diet. They provide the main source of energy for the body, and they also function to flavor and sweeten foods. Carbohydrates range from simple sugars like glucose to complex sugars such as amylose and 5 amylopectin. Nutritionists estimate that carbohydrates should make up about one-fourth to one-fifth of a person's diet. This translates to about 75-100 grams of carbohydrates per day.
A diet that is deficient in carbohydrates can have an adverse effect 10 on a person's health. When the body lacks a sufficient amount of carbohydrates it must then use its protein supplies for energy, a process called gluconeogenesis. This, however, results in a lack of necessary protein, and further health difficulties may occur. A lack of carbohydrates can also lead to ketosis, a build-up of ketones 15 in the body that causes fatigue, lethargy, and bad breath.
1. What is the main idea of this passage?
(A) Carbohydrates are needed for good health.
(B) Carbohydrates prevent a build-up of proteins.
(C) Carbohydrates can lead to ketosis.
(D) Carbohydrates are an expendable part of a good diet.
2. The word "function" as used in line 3 refers to which of the following?
(A) neglect
(B) serve
(C) dissolve
(D) profess
3. The word "range" as used in line 3 is closest in meaning to which of the following?
(A) probe
(B) proceed
(C) hail
(D) extend
4. In line 5, the word "estimate" could best be replaced by
(A) disbelieve
(B) declare
(C) calculate
(D) wonder
5. According to the passage, what do most nutritionists suggest?
(A) Sufficient carbohydrates will prevent gluconeogenesis.
(B) Carbohydrates are simple sugars called glucose.
(C) Carbohydrates should make up about a quarter of a person's daily diet.
(D) Carbohydrates should be eaten in very small quantities.
6. Which of the following do carbohydrates NOT do?
(A) prevent ketosis
(B) cause gluconeogenesis
(C) provide energy for the body
(D) flavor and sweeten food
7. Which of the following words could best replace "deficient" as used in line 9?
(A) outstanding
(B) abundant
(C) insufficient
(D) unequal
8. What does the word "this" refer to in line 13?
(A) using protein supplies for energy
(B) converting carbohydrates to energy
(C) having a deficiency in carbohydrates
(D) having an insufficient amount of protein
9. According to the passage, which of the following does NOT describe carbohydrates?
(A) a protein supply
(B) a necessity
(C) a range of sugars
(D) an energy source
10. The word "lack" in line 13 is most similar to which of the following?
(A) plethora
(B) shortage
(C) derivation
(D) commission
11. Which of the following best describes the author's tone?
(A) sensitive
(B) emotional
(C) informative
(D) regretful
12. Which of the following best describes the organization of this passage?
(A) cause and result
(B) comparison and contrast
(C) specific to general
(D) definition and example
Đọc đoạn văn sau và trả lời các câu hỏi:
Since the world has become industrialized, there has been an increase in the number of animal species that have either become extinct or have neared extinction. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300, and by 5 the year 2025 their population is estimated to be down to zero. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not interested in material gain but in personal gratification. This is an example of the callousness that is part 10 of what is causing the problem of extinction. Animals like the Bengal tiger, as well as other endangered species, are a valuable part of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival, and the survival of our planet.
15 Countries around the world have begun to deal with the problem in various ways. Some countries, in order to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission to help defray the costs of maintaining the parks, 20 and they often must also depend on world organizations for support. With the money they get, they can invest in equipment and patrols to protect the animals. Another solution that is an attempt to stem the tide of animal extinction is an international boycott of products made from endangered species. This seems fairly effective, but it 25 will not, by itself, prevent animals from being hunted and killed.
1. What is the main topic of the passage?
(A) the Bengal tiger
(B) international boycotts
(C) endangered species
(D) problems with industrialization
2. Which of the following is closest in meaning to the word "alarming" in line 6?
(A) dangerous
(B) serious
(C) gripping
(D) distressing
3. Which of the following could best replace the word "case" as used in line 6?
(A) act
(B) situation
(C) contrast
(D) trade
4. The word "poachers" as used in line 7 could be best replaced by which of the following?
(A) illegal hunters
(B) enterprising researchers
(C) concerned scientists
(D) trained hunters
5. The word "callousness" in line 9 could best be replaced by which of the following?
(A) indirectness
(B) independence
(C) incompetence
(D) insensitivity
6. The above passage is divided into two paragraphs in order to contrast
(A) a problem and a solution
(B) a statement and an illustration
(C) a comparison and a contrast
(D) specific and general information
7. What does the word "this" refer to in line 9?
(A) endangered species that are increasing
(B) Bengal tigers that are decreasing
(C) poachers who seek personal gratification
(D) sources that may not be accurate
8. Where in the passage does the author discuss a cause of extinction?
(A) Since the world . . . down to zero.
(B) What is alarming . . . personal gratification.
(C) Country around . . . for support.
(D) With the money . . . dangered species.
9. Which of the following could best replace the word "allocated" in line 17?
(A) set aside
(B) combined
(C) organized
(D) taken off
10. The word "defray" in line 19 is closest in meaning to which of the following?
(A) lower
(B) raise
(C) make a payment on
(D) make an investment toward
11. The author uses the phrase "stem the tide" in line 22-23 to mean
(A) touch
(B) stop
(C) tax
(D) save
12. Which of the following best describes the author's attitude?
(A) forgiving
(B) concerned
(C) vindictive
(D) surprised
Đọc đoạn văn sau và trả lời các câu hỏi:
Since the world has become industrialized, there has been an increase in the number of animal species that have either become extinct or have neared extinction. Bengal tigers, for instance, which once roamed the jungles in vast numbers, now number only about 2,300, and by 5 the year 2025 their population is estimated to be down to zero. What is alarming about the case of the Bengal tiger is that this extinction will have been caused almost entirely by poachers who, according to some sources, are not interested in material gain but in personal gratification. This is an example of the callousness that is part 10 of what is causing the problem of extinction. Animals like the Bengal tiger, as well as other endangered species, are a valuable part of the world's ecosystem. International laws protecting these animals must be enacted to ensure their survival, and the survival of our planet.
15 Countries around the world have begun to deal with the problem in various ways. Some countries, in order to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission to help defray the costs of maintaining the parks, 20 and they often must also depend on world organizations for support. With the money they get, they can invest in equipment and patrols to protect the animals. Another solution that is an attempt to stem the tide of animal extinction is an international boycott of products made from endangered species. This seems fairly effective, but it 25 will not, by itself, prevent animals from being hunted and killed.
1. What is the main topic of the passage?
(A) the Bengal tiger
(B) international boycotts
(C) endangered species
(D) problems with industrialization
2. Which of the following is closest in meaning to the word "alarming" in line 6?
(A) dangerous
(B) serious
(C) gripping
(D) distressing
3. Which of the following could best replace the word "case" as used in line 6?
(A) act
(B) situation
(C) contrast
(D) trade
4. The word "poachers" as used in line 7 could be best replaced by which of the following?
(A) illegal hunters
(B) enterprising researchers
(C) concerned scientists
(D) trained hunters
5. The word "callousness" in line 9 could best be replaced by which of the following?
(A) indirectness
(B) independence
(C) incompetence
(D) insensitivity
6. The above passage is divided into two paragraphs in order to contrast
(A) a problem and a solution
(B) a statement and an illustration
(C) a comparison and a contrast
(D) specific and general information
7. What does the word "this" refer to in line 9?
(A) endangered species that are increasing
(B) Bengal tigers that are decreasing
(C) poachers who seek personal gratification
(D) sources that may not be accurate
8. Where in the passage does the author discuss a cause of extinction?
(A) Since the world . . . down to zero.
(B) What is alarming . . . personal gratification.
(C) Country around . . . for support.
(D) With the money . . . dangered species.
9. Which of the following could best replace the word "allocated" in line 17?
(A) set aside
(B) combined
(C) organized
(D) taken off
10. The word "defray" in line 19 is closest in meaning to which of the following?
(A) lower
(B) raise
(C) make a payment on
(D) make an investment toward
11. The author uses the phrase "stem the tide" in line 22-23 to mean
(A) touch
(B) stop
(C) tax
(D) save
12. Which of the following best describes the author's attitude?
(A) forgiving
(B) concerned
(C) vindictive
Đọc đoạn văn sau và trả lời các câu hỏi:
The peregrine falcon, a predatory bird indigenous to North America, was once in danger of extinction. In the 1960s, scientists discovered byproducts of the pesticide DDT in the birds' eggs, which caused them to be too soft to survive. The use of the pesticide had been 5 banned in the United States, but the falcons were eating migratory birds from other places where DDT was still used. In order to increase the survival rate, scientists were raising the birds in laboratories and then releasing them into mountainous areas. This practice achieved only moderate success, however, because many of the birds raised 10 in captivity could not survive in the wild.
There is now, however, a new alternative to releases in the wild. A falcon that has been given the name Scarlett chose to make her home on a ledge of the 33rd floor of a Baltimore, Maryland, office 15 building rather than in the wild, and, to the surprise of the scientists, she has managed to live quite well in the city. Following this example, programs have been initiated that release birds like Scarlett into cities rather than into their natural wild habitat. These urban releases are becoming a common way to strengthen the species. Urban homes 20 have several benefits for the birds that wild spots do not. First, there is an abundance of pigeons and small birds as food sources. The peregrine in the city is also protected from its main predator, the great horned owl. Urban release programs have been very successful in reestablishing the peregrine falcons along the East Coast. Though 25 they are still an endangered species, their numbers increased from about 60 nesting pairs in 1975 to about 700 pairs in 1992. In another decade the species may flourish again, this time without human help.
1. What is the main topic of the passage?
(A) survival of peregrine falcons
(B) releases into the wild
(C) endangered species
(D) harmful effects of pesticides
2. In line 1, the phrase "indigenous to" could be best replaced by
(A) typical of
(B) protected by
(C) adapted to
(D) native to
3. The word "byproducts" in line 3 could best be replaced by which of the following?
(A) derivatives
(B) proceeds
(C) chemicals
(D) elements
4. In line 5, the word "banned" could be best replaced by
(A) authorized
(B) developed
(C) disseminated
(D) prohibited
5. Which of the following words is closest in meaning to the word "rate," as used in line 7?
(A) speed
(B) percentage
(C) continuation
(D) behavior
6. In line 7, the word "raising" most probably means
(A) breeding
(B) elevating
(C) collecting
(D) measuring
7. Why were the peregrine falcons in danger?
(A) because of pesticides used by American farmers
(B) because they migrated to countries where their eggs could not survive
(C) because they ate birds from other countries where DDT was still used
(D) because they were prized by hunters and hunted to near extinction
8. The word "releases" as used in line 12 most probably means
(A) internment
(B) regression
(C) distribution
(D) possessions
9. The word "ledge" in line 14 is closest in meaning to
(A) window
(B) wall
(C) terrace
(D) shelf
10. According to the passage, which of the following is NOT a reason why a falcon might choose to live in a city?
(A) There are high places to nest.
(B) There are other falcons nearby.
(C) There is a lack of predators.
(D) There is abundant food.
11. According to the passage, which of the following are the falcon's main predators?
(A) pigeons
(B) rattlesnakes
(C) owls
(D) humans
12. As used in line 20, the word "spots" could best be replaced by
(A) places
(B) dilemmas
(C) jungles
(D) materials
13. According to the passage, where have the release programs been the most successful?
(A) in office buildings
(B) on the East Coast
(C) in mountainous areas
(D) in the wild
Đọc đoạn văn sau và trả lời các câu hỏi:
The peregrine falcon, a predatory bird indigenous to North America, was once in danger of extinction. In the 1960s, scientists discovered byproducts of the pesticide DDT in the birds' eggs, which caused them to be too soft to survive. The use of the pesticide had been 5 banned in the United States, but the falcons were eating migratory birds from other places where DDT was still used. In order to increase the survival rate, scientists were raising the birds in laboratories and then releasing them into mountainous areas. This practice achieved only moderate success, however, because many of the birds raised 10 in captivity could not survive in the wild.
There is now, however, a new alternative to releases in the wild. A falcon that has been given the name Scarlett chose to make her home on a ledge of the 33rd floor of a Baltimore, Maryland, office 15 building rather than in the wild, and, to the surprise of the scientists, she has managed to live quite well in the city. Following this example, programs have been initiated that release birds like Scarlett into cities rather than into their natural wild habitat. These urban releases are becoming a common way to strengthen the species. Urban homes 20 have several benefits for the birds that wild spots do not. First, there is an abundance of pigeons and small birds as food sources. The peregrine in the city is also protected from its main predator, the great horned owl. Urban release programs have been very successful in reestablishing the peregrine falcons along the East Coast. Though 25 they are still an endangered species, their numbers increased from about 60 nesting pairs in 1975 to about 700 pairs in 1992. In another decade the species may flourish again, this time without human help.
1. What is the main topic of the passage?
(A) survival of peregrine falcons
(B) releases into the wild
(C) endangered species
(D) harmful effects of pesticides
2. In line 1, the phrase "indigenous to" could be best replaced by
(A) typical of
(B) protected by
(C) adapted to
(D) native to
3. The word "byproducts" in line 3 could best be replaced by which of the following?
(A) derivatives
(B) proceeds
(C) chemicals
(D) elements
4. In line 5, the word "banned" could be best replaced by
(A) authorized
(B) developed
(C) disseminated
(D) prohibited
5. Which of the following words is closest in meaning to the word "rate," as used in line 7?
(A) speed
(B) percentage
(C) continuation
(D) behavior
6. In line 7, the word "raising" most probably means
(A) breeding
(B) elevating
(C) collecting
(D) measuring
7. Why were the peregrine falcons in danger?
(A) because of pesticides used by American farmers
(B) because they migrated to countries where their eggs could not survive
(C) because they ate birds from other countries where DDT was still used
(D) because they were prized by hunters and hunted to near extinction
8. The word "releases" as used in line 12 most probably means
(A) internment
(B) regression
(C) distribution
(D) possessions
9. The word "ledge" in line 14 is closest in meaning to
(A) window
(B) wall
(C) terrace
(D) shelf
10. According to the passage, which of the following is NOT a reason why a falcon might choose to live in a city?
(A) There are high places to nest.
(B) There are other falcons nearby.
(C) There is a lack of predators.
(D) There is abundant food.
11. According to the passage, which of the following are the falcon's main predators?
(A) pigeons
(B) rattlesnakes
(C) owls
(D) humans
12. As used in line 20, the word "spots" could best be replaced by
(A) places
(B) dilemmas
(C) jungles
(D) materials
13. According to the passage, where have the release programs been the most successful?
(A) in office buildings
(B) on the East Coast
(C) in mountainous areas
(D) in the wild
Đọc đoạn văn sau và trả lời các câu hỏi:
A pilot cannot fly a plane by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot 5 how fast nearby planes are moving.
The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the 10 waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radiation waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained 15 technician can determine the distance between the radar set and other objects. The word "radar," in fact, gets its name from the term "radio detection and ranging." "Ranging" is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, 20 tracking ships at sea, and for tracking weather systems and storms.
1. What is the main topic of this passage?
(A) the nature of radar
(B) types of ranging
(C) alternatives to radar
(D) history of radar
2. In line 2, the word "dense" could be replaced by
(A) cold
(B) wet
(C) dark
(D) thick
3. According to the passage, what can radar detect besides location of objects?
(A) size
(B) weight
(C) speed
(D) shape
4. The word "shouts" in line 8 is most similar in meaning to which of the following?
(A) eavesdrops
(B) yells
(C) confesses
(D) whispers
5. Which of the following words best describes the tone of this passage?
(A) argumentative
(B) imaginative
(C) explanatory
(D) humorous
6. The phrase "a burst" in line 13 is closest in meaning in which of the following?
(A) an attachment
(B) a discharge
(C) a stream
(D) a ray
7. The word "it" in line 13 refers to which of the following?
(A) a radar set
(B) a short burst
(C) a radiation wave
(D) light
8. Which of the following could best replace the word "bounce" in line 13?
(A) overturn
(B) groove
(C) extend
(D) rebound
9. Which type of waves does radar use?
(A) sound
(B) heat
(C) radio
(D) light
10. The word "tracking" in line 20 is closest in meaning to which of the following?
(A) repairing
(B) searching for
(C) glancing at
(D) fighting
11. Which of the following would most likely be the topic of the next paragraph?
(A) other uses of radar
(B) uses of sonar technology
(C) other technology used by pilots
(D) a history of flying
12. What might be inferred about radar?
(A) It takes the place of a radio.
(B) It gave birth to the invention of the airplane.
(C) It developed from a study of sound waves.
(D) It has improved navigational safety.
Đọc đoạn văn sau và trả lời các câu hỏi:
A pilot cannot fly a plane by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot 5 how fast nearby planes are moving.
The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the 10 waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radiation waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained 15 technician can determine the distance between the radar set and other objects. The word "radar," in fact, gets its name from the term "radio detection and ranging." "Ranging" is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, 20 tracking ships at sea, and for tracking weather systems and storms.
1. What is the main topic of this passage?
(A) the nature of radar
(B) types of ranging
(C) alternatives to radar
(D) history of radar
2. In line 2, the word "dense" could be replaced by
(A) cold
(B) wet
(C) dark
(D) thick
3. According to the passage, what can radar detect besides location of objects?
(A) size
(B) weight
(C) speed
(D) shape
4. The word "shouts" in line 8 is most similar in meaning to which of the following?
(A) eavesdrops
(B) yells
(C) confesses
(D) whispers
5. Which of the following words best describes the tone of this passage?
(A) argumentative
(B) imaginative
(C) explanatory
(D) humorous
6. The phrase "a burst" in line 13 is closest in meaning in which of the following?
(A) an attachment
(B) a discharge
(C) a stream
(D) a ray
7. The word "it" in line 13 refers to which of the following?
(A) a radar set
(B) a short burst
(C) a radiation wave
(D) light
8. Which of the following could best replace the word "bounce" in line 13?
(A) overturn
(B) groove
(C) extend
(D) rebound
9. Which type of waves does radar use?
(A) sound
(B) heat
(C) radio
(D) light
10. The word "tracking" in line 20 is closest in meaning to which of the following?
(A) repairing
(B) searching for
(C) glancing at
(D) fighting
11. Which of the following would most likely be the topic of the next paragraph?
(A) other uses of radar
(B) uses of sonar technology
(C) other technology used by pilots
(D) a history of flying
12. What might be inferred about radar?
(A) It takes the place of a radio.
(B) It gave birth to the invention of the airplane.
(C) It developed from a study of sound waves.
(D) It has improved navigational safety.
1. Mary uses/is using/use/using her mobile phone to take pictures nearly every day.
2. Jack have/is having/has/having a cool new mountain bike.
3. I reads/read/am reading/reading a newspaper at least once a week.
4. She want/is wanting/wants/wanting to become a famous fashion designer.
5. Do you practise/Are you practising/Is you practise/Do you practising the piano for two hours every day?
6. Timmy and Claire does/do/are doing/is doing quite well at school at the moment.
7. She wasn't too keen in/on/at/of going to the party.
8. Do you like collecting/making/doing/cooking antiques?
9. She often makes/does/cuts/waters gardening in the morning.
10. They sometimes call/order/go/run window-shopping when they have free time.