ANSWER KEYS
UNIT 9: UNDERSEA WORLD (THẾ GIỚI DƯỚI BIỂN)
I. Choose the word which has the underlined part pronounced differently from the rest.
1. A. gulf B. surface C. submarine D. current
2. A. ocean B. undersea C. beneath D. deep
3. A. poor B. tour C. actual D. group
4. A. tiny B. device C. krill D. migrate
5. A. think B. depth C. further D. breathe
II. Choose the word which is stressed differently from the rest.
1. A. maintain B. marine C. challenge D. device
2. A. investigate B. information C. submarine D. independent 3. A. organism B. environment C. temperature D. satellite
4. A. carnivore B. entrapment C. technology D. Atlantic
5. A. secret B. ocean C. migrate D. herbicide
III. Fill in the blanks with one suitable word from the box.
challenged discoveries overcome investigating contribution covered conservation entrapment
1. Scientists have made many important new_discoveries_of the depth by using modern devices.
2. Community police have made a very positive _contribution __to crime prevention.
3. This new discovery __challenged___traditional beliefs.
4. Seventy-five percent of the earth surface is_covered__by water.
5. Scientists are__
investigating
___how the crash occurred.IV. Choose one word or phrase - a, b, c or d - that best completes the sentence or substitutes for the underlined word or phrase.
1. Some whales migrate into warm waters to bear their...
A. young B. diets C. calves D. young whales
2. Whales feed on krill.
A. tiny shellfish B. small fish C. sea plants D. small animals 3. ... is the variety of different types of plant and animal life in a particular region.
A. Interaction B. Herbicide C. Environment D. Biodiversity 4. He is a ... biologist. He spends all his life studying sea plants and animals.
A. ocean B. marine C. botany D. sea
5. ...is a chemical used for killing- weeds.
A. Pesticide B. Herbicide C. Fertilizer D. Antibiotic 6. We all enjoyed the waters of Timor Sea and the coral reefs that lie ...
A. under B. behind C. beneath D. beside
7. Some tiny organisms are ... along by the currents.
A. carried B. taken C. flowed D. moved 8. Sperm whales are ..., which means they eat meat.
A. herbivores B. carnivores C. omnivores D. mammals 9. Sperm whale population are at risk due to hunting.
A. in extinction B. in danger C. on the decrease D. in fewness 10. These birds...to North Africa in winter.
A. settle B. go C. relocate D. migrate
V. Choose the word or phrase - a, b, c or d - that best completes the sentence.
1. What would Tom do if he _____ the truth ?
A. would know B. has know C. knows D. knew
2. Could you talk _____? I’m trying to work.
A. more quietly B. quieter than C. more quiet D. quiet 3. Whales and sharks are carnivores, _____ means they eat meat.
A. this B. that C. it D. which
4. Would you mind _____ me tomorrow ?
A. call B. calling C. to call D. if you call 5. If someone _____ into the store, smile and say, “May I help you?”
A. comes B. came C. will come D. would come 6. She’s been studying hard for the exam, so she ________ to pass.
A. should B. ought C. had better D. must
7. ‘Why are you so late ?’ ‘I ________ my aunt to the airport. The traffic was terible!’
A. could take B. must have taken C. should take D. had to take 8. If I weren’t working for an accounting firm, I ________ in a bank.
A. work B. will work C. have worked D. would be working
VI. Mark A, B, C, or D to show the underlined part that needs correction.
1. Jack will win the election if he campaigned harder.
A B C D
2. We’re used to think that there was no life in the ocean depths.
A B C D
3. Unless we work harder, we will finish on time.
A B C D
4. Despite his disability, he tried leading as normal a life as possible.
A B C D
5. The match was cancelled due to the weather was bad.
A B C D
VII. Read the passage carefully and choose the correct answer.
Man is a land animal, but he closely tied to the sea. Throughout history the sea has served the needs of man. The sea provided man with food and convenient way to travel to many parts of the world. Today, nearly two thirds of the world’s population live within 80 kilometers of the sea coast.
In the modern technological world, the sea offers many resources to help mankind survive.
Resources on land are beginning to be used up. The sea however, still can be hoped to supply many of man’s needs.
The list of riches of the sea yet to be developed by man’s technology is impressive. Oil and gas exploration have been carried out for nearly 30 years. Valuable amounts of mineral exist on the ocean floor ready to be mined.
Fish farming promises to be a good way to produce large quantities of food. The culture of fish and shellfish is an ancient skill practised in the past mainly by the Oriental people.
Besides oil and gas, the sea may offer new source of energy. Experts believe that the warm temperature of the ocean can be used in a way similar to the steam in a steamship. Ocean currents and waves offer possible use as a source of energy. Technology is enabling man to explore ever more deeply under the sea. The development of strong, new materials has made this possible.
The technology to harvest the sea continues to improve. Experts believe that by the year 2020 the problems that prevent us from exploiting fully the food, minerals and energy sources of the sea will be largely solved.
1. The best title for this passage is ___________.
A. Sea Harvest B. Sea Food
C. Man and the Sea D. Technology for Exploiting the Sea 2. The major things that the sea offers man are ____________.
A. fish and oil B. minerals and oil
C. warm temperature and ocean currents D. the food, energy sources, and minerals
3. The sea serves the needs of man because _____________.
A. it provides man with food B. it supplies man with minerals
C. it offers oil to man D. all are correct
4. The words ‘Oriental people’ in paragraph 4 probably mean __________.
A. the people in Asia B. African people
C. European people D. American people
5. We can conclude from this passage that ____________.
A. the sea resources have largely been used up B. the sea has not yet been fully exploited
C. the problem that prevent us from using the food, minerals and energy sources of the sea have already been solved
D. by the year 2020 the technology will be good enough to exploit all the sea resources
VIII. Mark the letter A, B, C, or D to indicate the correct word(s) for each of the blanks.
Dolphins are known as cetaceans, or marine (1) _____ : they breathe air, they are warm- blood, and they bear live young ones called (2) _____.
The size of dolphins vary greatly. The smallest dolphins is just about 50 kg in weight and 1.2 meters in length (3) _____ the largest one can weigh up to 8.200 kg and is 10 meters long.
Dolphins are sociable creatures. They swim together in group known as (4) _____. They show great ability in the water and you can often (5) _____ them playing around ships.
1. A. fish B. creatures C. mammals D. life
2. A. babies B. calves C. young D. diets
3. A. when B. as C. while D. since
4. A. currents B. flocks C. herds D. schools
5. A. look down B. come arcoss C. run after D. go by
IX. Choose the best option to complete the second sentence so that it has a similar meaning to the first.
1. Climbing without a safety rope is forbidden.
You _____________________________________________________________________
A. aren’t allowed to climb without a safety rope.
B. don’t permit to climb without a safety rope.
C. aren’t forbidden climbing without a safety rope.
D. had better climb with a safety rope.
2. Nigel hasn’t got satellite TV, so he can watch the game.
If________________________________________________________________________
A. Nigel has satellite TV, he can watch the game.
B. Nigel has got satellite TV, he would able to watch the game.
C. Nigel had satellite TV, he could watch the game.
D. Nigel would have satellite TV, he could watch the game.
3. Walking home alone is not a good idea.
You_____________________________________________________________________
A. can’t walk home alone. B. mustn’t walk home alone.
C. don’t have to walk home alone. D. shouldn’t walk home alone.
4. ‘Did someone ring you an hour ago ?’ Martin said to Susan.
Martin asked Susan_________________________________________________________
A. whether anyone rang her an hour ago.
B. if someone had rung her an hour before.
C. whether someone rang him an hour ago.
D. if anyone had rung her an hour before.
5. Throw a stone into water and it sinks.
If________________________________________________________________________
A. you threw a stone into water, it would sink.
B. a stone is thrown into water, it may sink.
C. you will throw a stone into water, it sinks.
D. you throw a stone into water, it sinks.
UNIT 10: CONSERVATION (SỰ BẢO TỒN)
I. Choose the word which has the underlined part pronounced differently from the rest.
1. A. eliminate B. elephant C. endanger D. erosion
2. A. pollute B. species C. accept D. receipt
3. A. environment B. hydroelectric C. circulation D. wild
4. A. club B. lamb C. doubt D. bomber
5. A. disease B. spread C. breed D. treat
II. Choose the word which is stressed differently from the rest.
1. A. disappearance B. circulation C. conservation D. environment 2. A. conserve B. pollute C. circulate D. eliminate
3. A. nature B. power C. damage D. defence
4. A. vegetation B. destruction C. variety D. erosion
5. A. injured B. valuable C. forest D. protect
III. Fill in the blanks with one suitable word from the box.
polluted save policy constantly conserve
eliminated variety endangered clean-up spreads
1/ The fire spreads very rapidly because of the strong wind.
2. Endangered animals should be bred in conservable areas.
3. We can do something to save the earth.
4. We cannot clean up our polluted rivers and seas overnight.
5. To conserve electricity, we are cutting down on our central heating.
IV. Mark A, B, C, or D to indicate the correct answer to each of the following questions
1. We are now facing the possible________ of several rare species.
A. danger B. variety C. existence D. disappearance 2. Try to eliminate fatty foods from your diet.
A. limit B. get rid of C. move D. add
3. Rapid run-off would cause frequent floods and leave little water during fry seasons.
A. Bad B. Weak C. Slow D. Ugly
4. Acid rain has caused severe _______ on the hillside.
A. erosion B. pollution C. destruction D. floods 5. This channel allows rainwater to run off.
A. keep inside B. move around C. flow into D. flow out of 6. A large hydroelectric __________was built on the River Danube.
A. power B. dam C. bank D. wall
7. Water can be held on the land by vegetation.
A. plants used as food B. grown trees
C. the growth of plants D. plants and trees
8. The new laws to conserve wildlife in the area will come into force nextmonth.
A. protect B. pollute C. destroy D. eliminate
V. Complete each sentence, using the passive voice 1. He can’t solve this problem.
_______________________________________________________________
This problem can’t be solved.
2. People speak English all over the world.
_______________________________________________________________
English is spoken all over the world.
3. Jack did his homework last night.
_______________________________________________________________
Jack’s homework was done last night.
4. Mary is cutting the cake with a sharp knife.
_______________________________________________________________
The cake is being cut with a sharp knife by Mary.
5. They will build a new school in this area.
_______________________________________________________________
A new school will be built in this area
VI. Mark A, B, C, or D to indicate the correct answer to each of the following questions
1. They were interviewing her for the job.
She ________________ for the job.
A. was being interviewed B. was interviewed C. has been interviewed D. is interviewed 2. Tom is writing the letter.
The letter ________________ by Tom.
A. was written B.is being written C.has been written D. is written
3. Everyone understands English.
English ________________ by everyone.
A. is understood B. has been understood
C. was understood D. is being understood
4. The employees brought up this issue during the meeting.
This issue _______________ up by the employees during the meeting.
A. has been brought B. is brought
C. was brought D. had been brought
5. The professor told him not to talk in class.
He ________________ by the professor not to talk in class.
A. has been told B. was told C. was being told D. is told
6. You should give us this information.
A. We should give you this information. B. We should be given this information C. We should be give this information. D. This information should give us.
7. They are repairing our car at the garage.
A. Our car is repairing at the garage.
B. Our car is being repairing at the garage.
C. Our car is being repaired at the garage D. They are being repaired our car at the garage.
8. No one has cleaned the floor for weeks.
A. The floor hasn’t been cleaned for weeks.
B. The floor has been cleaned by someone for weeks.
C. The floor hasn’t cleaned for weeks.
D. A & B are correct.
9. They have given me a chance to explain my view.
A. I have given them a chance to explain my view.
B. I have be given them a chance to explain my view.
C. I have been given a chance to explain my view.
D. B & C are correct.
10. We will finish the report in time.
A. The report will finish in time. B. The report will be finished in time.
C. The report will be finish in time. D. The report is finished in time
VII. Mark A, B, C, or D to show the underlined part that needs correction in each question.
1. Your question can only answer by an excellent student.
A B C D
2. Him was taken to hospital in an ambulance yesterday.
A B C D
3. English is believe to be an international language.
A B C D
4. The watch has not repaired by the man yet.
A B C D 5. Erosion can prevent by planting trees and grass.
A B C D
IX. Read the passage carefully and choose the correct answer.
We are all slowly destroying the earth. The seas and rivers are too dirty to swim in.
There is so much smoke in the air that it is unhealthy to live in many of the world's cities.
In one well-known city, for example, poisonous gases from cars pollute the air so much that traffic policemen have to wear oxygen masks.
We have cut- down so many trees that there are now vast areas of wasteland all over the world. As a result, farmers in parts of Africa cannot grow enough to eat. In certain countries in Asia there is too little rice. Moreover, we do not take enough care of the countryside. Wild animals are quickly disappearing. For instant, tigers are rare in India now because we have killed too many for them to survive. However, it isn't enough simply to talk about the problem. We must act now before it is too late to do anything about it. Join us now. Save the Earth. This is too important to ignore.
1. Are the seas and rivers nowadays polluted?
_____________________________________________________________
Yes, they are.
2. Why do the traffic policemen have to wear oxygen masks?
_____________________________________________________________
The traffic policemen have to wear oxygen masks because of air pollution
3. Why do farmers imparts of Africa and Asia not grow enough to eat?
_____________________________________________________________
Because there are large areas of land that cannot be used.
4. How are wild animals nowadays?
_____________________________________________________________
Wild animals are quickly disappearing
UNIT 11 NATIONAL PARKS ( CÁC CÔNG VIÊN QUỐC GIA )
I. Choose the word which has the underlined part pronounced differently from the rest.
1. A. worked B. hoped C. watched D. lived 2. A. invader B. destroy C. spend D. soldier 3. A. nature B. toxic C. plant D. contain
4. A. played B. missed C. called D. moved 5. A. nation B. tourist C. study D. return
II. Choose the word which is stressed differently from the rest.
1. A. ethnic B. explore C. orphan D. fauna 2. A. dependent B. survival C. minority D. recognize 3. A. temperature B. chemical C. habit D. location 4. A. abandon B. national C. wilderness D. butterfly 5. A. establish B. disaster C. tropical D. dependent III. Fill in the blanks with one suitable word from the box.
located establish orphan abandoned released defeated endangered contamination
1. Toxic gases from industrial factories are ______ released _________ into the atmosphere.
2. The giant panda is in danger of becoming extinct. It is an_____ endangered __________ species.
3. Cuc Phuong National Park is _____ located __________ 60 km South West of Ha Noi.
4. He has been _____ abandoned __________ since he was five.
5. The enemy was______ defeated _________ in a decisive battle.
IV. Mark A, B, C, or D to indicate the correct answer to each of the following questions 1. Cuc Phuong National Park _________ over 200 square kilometers of rainforest.
A. contains B. gets C. hold D. covers
2. An interesting __________of this park is Orphanage, where orphaned animals are taken care of.
A. advantage B.feature C.area D.zone
3. A child who has lost one or both of his parents by death is called ________ child.
A. an abandoned B. an orphan C. a homeless D.orphanage 4.The _________ has threatened many of animals in this park.
A. rainforest B. population C. increase D.contamination
5. They went camping in the beautiful _________ of the rainforest.
A. wildlife B. wildness C.wild D.wilderness
6. This park was _________ before World War II
A. set B. located C. established D. stationed
7. Scientists are now researching new measures to prevent levels from rising
_________.
A. pollute B. polluted C. polluting D. pollution
8. The cattle drank from a river polluted with toxic chemicals.
A. waste B. colorless C. odorless D. poisonous V. Complete the sentences with the correct form of the verbs in brackets.
1. I didn't go into business with Sam. If I _____ had gone __________ (go) into business with him, I ____ would have become___________ (become) a success.
2. We got to the station in time to catch the train. If we ____ had missed ___________ (miss) it, we ______ would have been _________ (be) late for the meeting.
3. Mary and I weren't able to go on a honeymoon. We ____ could have gone ___________ (can/
go) away if my father_____ hadn’t got __________ (not get) sick.
4. We ____ would have been ___________ (be) at the airport for hours, if we __ hadn’t known _____________ (not know) that the flight was delayed.
5. The accident was your fault. If you had driven more carefully, it __ wouldn’t have happened _____________ (not happen).
VI. Mark A, B, C, or D to indicate the correct answer to each of the following questions 1. One species is dependent __________ another of survival.
A. on B. to C. of D.at 2. We _________ to the beach yesterday if the sun had been shining.
A.will go B.would go C.would have gone D. had gone 3. If I _________ to the party last night, I _________ tired now.
A. had gone/would be B. had gone/would have been
C. were/would be D. went/would have gone
4. We wouldn’t have been to the cinema_________we hadn’t had ticket.
A. if B. unless C. because of D. in spite of 5. What ________ if you had met him yesterday?
A. did you do B. would you do C. would you have done D. will you do 6. If you were not sick, ________ camping with us?
A. will you go B. would you go C. do you go D. are you going 7. I don’t have enough time. If I …… more time, I …… to see you.
A. have / will come B. had / would come
C. have had / will have come D. had had / would have come 8. Had I known it would rain, I …… my umbrella.
A. will take B. would take C. am going to take D. would have taken 9. If it ……, the match will be postponed
A. will rain B. has rained C. is raining D. rains 10. If he had told me the truth, I …… him.
A. will not punish B. would not have punished
C. would not punish D. would have not punished
VII. Mark A, B, C, or D to show the underlined part that needs correction in each question.
1. He wouldn’t have known the news if you had told him.
A B C D 2. I had gone to see you if I’d known what you were ill.
A B C D
3. My brother would buy a sports car if he don’t have the money.
A B C D
4. If I have free time next Sunday, I would visit my grandmother.
A B C D
5. If I were you, I would have forgotten about buying a new car.
A B C D IX. Read the passage carefully and answer the questions.
Parks in our country are wonderful playgrounds and millions of people visit them every year. There are places where you can camp without charge or you can rent rooms in a hotel. You can take a long walk in the forests, take boat trips, or climb mountains. You are not allowed to hunt in the park, so there are many wild animals. You can fish in the streams of most of the parks.
The park keepers sometimes go with the visitors on walks to tell them about the animals, plants, and mountains. They also have programmes and talks at the campgrounds and in the hotels so that people can learn all about the park and the things that are in it.
1. Can you camp in the parks without having to pay anything?
Yes, we can.
2. How many people visit parks every year?
Millions of people visit them every year 3. What can you do in the parks?
We can take a long walk in the forests, take boat trips, or climb mountains.
4. Are we permitted to hunt in the park?
No, we are not.
5. Does the word “ them ” in line 5 refers to park keepers or visitors?
Visitors
X. Mark the letter A, B, C, or D to indicate the correct word(s) for each of the blanks.
The ostrich is the (1) _________ bird in the world, and an adult can be more than ninety kilos. Most wild ostriches live in southern Africa, but there are only a (2)_________of them left.
Like all birds, ostriches have wings, (3)_________ they cannot fly. They use their wings to help them (4)_________when they are running. Ostriches can run very fast , from sixty-five to ninety kilometers an hour, so it is very difficult for (5)_________ animals to catch them.
1. A. large B. larger C. largest D. most largest 2. A.few B. little C. lot D. many
3. A. or B. and C. but D. except 4. A. direct B. change C. alter D. turn 5. A. another B. other C. others D. one other
XI. Mark A, B, C, or D to indicate the correct answer or the sentence that is closest in meaning to each of the following questions.
1. _________ if I take a map.
A. I will get lost B. I will not get lost C. I would get lost D. I would not get lost 2. _________, I’d have told you the answer.
A. If you asked me B. Unless you asked me
C. You had asked me D. Had you asked me
3. He didn’t work hard, so he failed the exam.
A. If he worked hard, he wouldn’t fail the exam.
B. If he hadn’t worked hard, he would have failed the exam.
C. He would have passed the exam if he had worked hard.
D. He had passed the exam if he would have worked hard.
4. I was tired because I stayed up late last night.
A. If I hadn’t stayed up late at night, I wouldn’t have been tired.
B. I hadn’t been tired if I wouldn’t have stayed up lat.
C. If I had stayed up late at night, I would have been tired.
D. I wouldn’t be tired If I didn’t stay up late at night.
5. He worked lazily so he was sacked.
A. If he hadn’t worked lazily, he wouldn’t have been sacked.
B. If he worked lazily, he would be sacked.
C. Unless he had worked lazily, he would have been sacked.
D. If he hadn’t worked lazily, he would have been sacked.
