Bài tập Tiếng Anh 10 Bài 9: Undersea World (Phần 1)

Unit 9: Undersea World

Đề luyện 1:

Choose the word in each group that has the underlined part pronounced differently from the rest

1. a. dear     b. clear     c. year     d. bear

2. a. here     b. where     c. wear     d. pair

3. a. floor     b. poor     c. usually     d. casual

4. a. jealous     b. weather     c. heavy     d. ideal

5. a. four     b. pour     c. tour     d. course

Choose the one word or phrase - a, b, c or d - that best completes the sentence

6. The recent heavy rains have helped to ease the water _________.

a. supply     b. poverty     c. plenty     d. shortage

7. The starfish lives on or depend _________ the bottom.

a. of     b. in     c. on     d. for

8. The sea is polluted, which _________ sea plants and animals.

a. dangers     b. dangerous     c. dangerously    d. endangers

9. To __________ a bad habit is not quite easy to most of human beings

a. divide    b. overcome     c. reveal     d. investigate

10. Oil spills are a great _________ to the undersea world.

a. threat     b. threaten     c. threatened     d. threateningly

11. She needs a change. She _______ go away for a few days

a. may     b. might     c. should     d. could

12. He laughed to hide his __________.

a. nerve     b. nervous     c. nervously     d. nervousness

13. The life ____ of sperm whale can be up to seventy years.

a. period     b. length     c. distance     d. span

14. 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

15. __________ is the term that refers to the existence of different kinds of animals and plants which make a balance environment.

a. Challenge     b. Sample     c. Biodiversity    d. Technology

Read the passage carefully, then choose the correct answer:

Most people are afraid of sharks, but they usually do not know much about them. For example, there are about 350 species of sharks that live in oceans over the world. All of the sharks are carnivores, but most of them don't attack people. Some sharks are very small - the smallest shark is about 6 inches long - about as long as your hand. But some sharks are very large. The largest species of sharks may be 60 feet long and weigh 15 tons. Unlike many other kinds of fish, sharks do not have bone. Their bodies are made up of a kind of tough white flexible material (called cartilage). Sharks do not have ears. However, they 'hear' sounds and movements in the wade. Any sound or movement makes the water vibrates. Sharks can feel these vibrations and they help the sharks find food. Sharks use their large eyes to find food, too. Most sharks see best in low light. They often hunt for food at dawn in the evening, or in the middle of the night.

Nowadays scientists want to learn more about sharks for several reasons. For example, cancer is common in many animals, including, people. However. it is rare in sharks. Scientists want to find out why sharks almost never get cancer. Maybe this information can help people prevent cancer too.

16. According to the passage, sharks ___________________.

a. are big mammals.        b. usually live in warm water.

c. are meat eaters.        d. always attack humans.

17. How long is a smallest shark?

a. About 6 centimeters        b. As long as a hand

c. As one's long hand        d. About 1,5 meters

18. The word 'they' as bold refers to _________.

a. sharks     b. sounds     c. vibrations     d. movements

19. Sharks can hunt for food at night because __________________.

a. they 'hear' more clearly at night.

b. their eyes are large.

c. they feel vibrations in the water.

d. they see well in the dark.

20. Which of the following is not true?

a. Large sharks can weigh up to 15,000 kg.

b. Sharks' bodies are made up of cartilage.

c. Sharks can find their food by feeling vibrations.

d. Sharks often attack people.

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