题目内容：

完形填空，阅读下面短文，掌握其大意，然后从各小题所给的四个选项中选出最佳选项。

Natural resources(自然资源)are things that we use that come from Earth. Our natural resources are limited. This means that they will not_______forever. Some are renewable, like when you plant a new tree when you _______ one down. Others are not renewable(可再生的), like when you dig coal out of the _______. Once it is used, it is gone.

People realize the _______ that Earth’s natural resources are limited, and can do things to help conserve(节约)those resources. _______ you try to conserve a natural resource, you try too use less of it, so it does not get used up so _______ . One way that people conserve fuel, like gasoline, is by riding a bicycle or walking when the _______ is short instead of driving everywhere.

Water is a very important natural resource because we all need it to stay _______  . We can conserve water _______  making sure that our pipes and taps do not leak (漏). We can also make _______ choices to conserve water, like only using the dishwasher or washing machine when they are full. Eevryone can make contributions to protecting natural resources.

1.A. last       B. spread    C. burn          D. change

2.A. turn       B. cut        C. put          D. move

3.A. station  B. building   C. ground        D. brick

4.A. news       B. plan      C. decision    D. fact

5.A. When       B. Although   C. Whatever      D. Whether

6.A. slowly    B. hard      C. regularly     D. fast

7.A. money      B. space     C. place         D. distance

8.A. alive      B. alone      C. asleep        D. awake

9.A. about      B. for       C. by           D. with

10.A. generous  B. funny     C. wise          D. surprising