6..The two brothers ______ to take care of their sick mother.

A. take turn　　　 B. make turn　　　 C. take turns　　　　 D. make turns

5.Many countries are increasing their use of natural gas, wind and other forms of ______.

A. energy　　　 B. source　　 C. power　　 D. material

4.______ a result of the change of the time, which we didn’t adapt ______, we had to revise (修改) our timetable.

A. As; to　　 　　　　　B. For; on　　 　　C. Because; with　 　　D. As; with

3.Although a large ______ of money was used and a ______ of doctors and nurses lost their lives in fighting against SARS, Chinese people were able to win the battle in the end.

A. number; amount　　 B. amount; number　 　C. number; deal　　　 D. deal; amount

2.The Northeastern Tiger, a rare kind of animal in China, is really ______ danger ______ present.

　 A. at; in　　　 B. with; for　　　 C. on; in　　　　 D. in; at

1.Immediate measures should be ______ the ______ animals and plants.

A. taken to save; endangering　　　　 B. taken to save; endangered

C. taken saving; endangered　　　　　 D. taken saving; endangering

10.The first step towards protecting the environment is to try to throw away less rubbish.

9.We all care about nature and the environment, but we may not always do everything we could or should.

8.When the habitat of a species is changed or destroyed, the animal or plant has to either adapt to the change or find a new home.

7.Animals and plants must have a habitat or home, which is comfortable and clean, and where there is enough food and other resources.