1.B
2.A
3.C

4.D

5.B
6.B
7.B

8.A
9.B
10.C

1. To ...........a bad habit, such as smoking and gambling, is not quite easy to most of human being.

A.divide

B. overcome

C. reveal

D.investigate

2. John’s father is a .............scientist. He studies life in the sea.

A.marine

B.undersea

C.submarine

D.organism

3. In some countries, teenagers can live ..........oftheir parents if they want.

A.dependently

B. independent

C.independently

D.independence

4. The authority supplied the victims of the fire ..............food, clothes, and money.

A.on

B.for

C.to

D.with

5. The existence of different kinds of animals and plants which make a balanced environment is called.........

A. biodiversity

B.challenge

C.rubbish

D. maintain

6. Oil spills are a great...........to the undersea world.

A.threat

B.threaten

C.threatened

D.threateningly

7. Sea life has a strong ......on the composition of sea water.

A. challenge

B.information

C.investigation

D.influence

Choose the word which has the SAME meaning with the underlined word

8. They spent their childhood in a tinyfishery village by the sea.

A. small

B.enormous

C.big

D.large

9. He is always interested in the mysterious that lie beneaththe ocean.

A.over

B.under

C.above

D.on

10. Sperm whale population are at riskdue to hunting.

A. at hand

B.on purpose

C.in danger

D.in use