UNIT 9 : UNDERSEA WORLD


< I >: A. Choose the word whose underlined part is pronounced differently from the others:
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
B. Choose the word whose main stress is placed differently from the others:
6. a. maintain b. marine c. challenge d. device
7. a. investigate b. information c. submarine d. independent
8. a. organism b. environment c. temperature d. satellite
9. a. carnivore b. entrapment c. technology d. Atlantic
10. a. secret b. ocean c. migrate d. herbicide

< II >: Complete the sentences with the words in the box:

challenged discoveries overcome investigating contribution
covered conservation entrapment maintained migrate

1. Scientists have made many important new ___________ of the depth by using modern devices.
2. Community police have made a very positive ___________ to crime prevention.
3. This new discovery _____________ traditional beliefs.
4. Some whales are known to _____________ into warm waters to bear their calves.
5. Seventy-five percent of the earth surface is ____________ by water.
6. Unless the biodiversity were ____________, marine life would be at stake.
7. Scientists are ____________ how the crash occurred.
8. Sperm whale populations are at risk due to hunting and their accidental __________ in fishing nets.
9. What can I do to _____________ my fear of flying ?
10. The government has just set up a wildlife ____________ project.

< III >: Make the correct choice :
1. If modern technology did not exist, we would never have such precious information.
a. valuable b. precise c. confidential d. detailed
2. Some marine animals are dangerous to humans.
a. living in the mountain b. living in the ocean
c. living in the forest d. living in the house
3. The floor was covered in tiny pieces of paper.
a. unimportant b. many c. very large d. extremely small
4. Sperm whales and sharks are carnivores.
a. animals that live in the sea b. animals that only eat plants
c. fish that aren’t born from eggs d. animals that eat meat
5. How many offspring does a sperm whale usually have ?
a. eggs b. mammals c. babies d. diets
6. Some whales migrate into warm waters to bear their ____________.
a. youngs b. diets c. calves d. young whales
7. Whales feed on krill.
a. tiny shellfish b. small fish c. sea plants d. small animals
8. _____ is the variety of different types of plant and animal life in a particular region.
a. Interaction b. Herbicide c. Environment d. Biodiversity
9. He is a _____ biologist. He spends all his life studying sea plants and animals.
a. ocean b. marine c. botany d. sea
10. _____ is a chemical used for killing weeds.
a. Pesticide b. Herbicide c. Fertilizer d. Antibiotic
11. We all enjoyed the waters of Timor Sea and the coral reefs that lie _____.
a. under b. behind c. beneath d. beside
12. Some tiny organisms are _____ along by the currents.
a. carried b. taken c. flowed d. moved
13. Sperm whales are _____, which means they eat meat.
a. herbivores b. carnivores c. omnivores d. mammals
14. Sperm whale populations are at risk due to hunting.
a. in extinction b. in danger c. on the decrease d. in fewness
15. These birds _____ to North Africa in winter.
a. settle b. go c. relocate d. migrate
16. What would Tom do if he _____ the truth ?
a. would know b. has know c. knows d. knew
17. Jim wanted to know _____ call and tell him where to meet you.
a. you could b. whether you can c. if you could d. when could you
18. Could you talk _____? I’m trying to work.
a