
EXERCISE
I. Choose the word that has the underlined part pronounced differently from the others 1. A. gulf B. surface C. submarine D. undersea 2. A. ocean B. undersea C. beneath D. deep 3. A. poor B. tour C. actual D. group 4. A. sure B. pure C. picture D. mature 5. A. pine B. psychology C. plane D. pick II. Choose the word whose main stress is placed differently from the others 1. A. maintain B. marine C. challenge D. device 2. A. investigate B. information C. submarine D. independent 3. A. reveal B. supply C. effect D. planet 4. A. oversize B. satellite C. existence D. pesticide 5. A. discover B. endanger C. fertilize D. contribute III. WORD FORMATION 1. By the age of eighteen, he was completely ______________of his parents. (denpend) 2. The power station has been shut down for essential _____________. (maintain) 3. Scientists have made many important new ______________of the depth by using mordern devices. (discover) 4. The government has just set up a wildlife _______________project. (conserve) 5. They are investigating the ______________disappearance of a young woman. 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. The country is divided _____ nine regions
A. to B. on C. into D. up 2. I’d like to contribute _____ the school restoration fund.
A. on B. to C. with D. for 3. Raw sewage makes the sea ____ and endangers sea plants and animals
A. pollute B. polluting C. polluted D. pollution 4. _____ is a chemical used for killing weeds.
A. Pesticide B. Herbicide C. Fertilizer D. Antibiotic 5. Some tiny organism are ____ along by the currents.
A. carried B. taken C. flowed D. moved 6. The health of our children is being __ by exhaust fumes.
A. endangered B. danger C. dangerous D. endanger 7. Many organizations have been set up and funds have been raised.
A. changed B. established C. decreased D. supported
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8. How_____ is the lake?
A. deep B. depth C. deepen D. deeply 9. Sperm whale population are at risk due to hunting.
A. in extinction B. in danger C. on the decrease D. in fewness 10.Sperm whales are _____, which means they eat meat.
A. herbivores B. carnivores C. omnivores D. mammals 11.What would Tom do if he ______ the truth?
A. would know B. has known C. knows D. knew 12.Could you talk _____? I’m trying to work.
A. more quietly B. quieter than C. more quiet D. quite 13.370C is the normal _______ of the human body.
A. coldness B. heat C. temperature D. weather 14._______ , he would lend us his car.
A. If he was here B. Was he here C. Were he here D. Unless he was here 15.Green turtles can migrate more than 1,4000 miles to ____ their eggs.
A. lie B. lay C. laid D. lain 16.If Marry were not afraid of flying, she would travel by plane.
A. Because of her fear of flying, Marry did not travel by plane. B. Because of her fear of flying, Marry does not travel by plane. C. Because of her fear of flying, Marry traveled by plane. D. Because of her fear of flying, Marry travels by plane. 17.We ______ English very well before we went to New York.
A. has learnt B. had learnt C. were learnt D. learnt 18. The chemical ________ from cars and factories make the air, water and soil dangerously dirty. A. pollution B. pollutants C. polluted D. pollute 19.Consumers have been encouraged to use ............... products.
A. environment friendly B. environmental friendC. environmentally friendly D.environmentally friend 20.You___________ Mark. You know it’s a secret.
A. should tell B. shouldn’t tell C. couldn’t tell D. might tell
V. Read the passage carefully and choose the correct answer. Every year, 100 million sharks are killed by people in commercial and recreational fishing. In the past they were killed simply for the sport of landing a good fighting fish (make sharks for instance). Sharkskin was used for making sandpaper. Other sharks are hunted for food, and some species for other products.
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