() 6. Mary  to the party held by the Students,Union.

   A. invited   B. was invited   C. was inviting   D. invites

() 5. Today the forests are disappearing quickly. Farmers must  down many trees.

   A. stop to cut   B. be stopped to cut

   C. be stopped from cutting   D. stop from cutting

() 4. New technology  to stop the students from cheating in the exams last year.

   A. is used   B. used   C. was used   D. use

() 3. (2015 •齐齐哈尔) Don’t forget to  the lights before you leave the classroom.

   A. turn off   B. turn down   C. turn up

() 2. —I think everyone must do his best to  pollution.

—If so,there will be a good future for people of tomorrow.

   A. stand   B. stop G. hide   D. miss

() 1. We do believe the greenhouse effect does  to our environment.

   A. harmful   B. harmless   C. harm   D. harms

A： Hi,Janet Would you like to help save the environment?

B： Yes,of course. 1  

A： Well,first,you can start by turning off the lights.

B: OK,that's easy. What's next?

A： 2   Don’t take a bus or a taxi if you don't have to.

B： That will save money too. What else?

A： 3  

B： Mmm,newspapers,magazines,letters ... We get a lot of paper at home. Good idea!

A: The fourth is turning off the shower when you’re not using it. 

B： You mean when I have shampoo in my hair?

A： Yes. Get wet. 4  Put the shampoo in your hair,then turn on the shower,and wash it out.

B： 5  

A： Yes,it will help a lot.

1.   2.   3.   4.   5.  

    Environmental problems are becoming more and more s 1  all over the world. For example  cars have made the air harmful to people and poisonous gas is g 2   off by factories. Trees on the hills have been cut down and waste water is being poured continuously intorivers.Furthermore,wherever we go today,we can find rubbish c 3  disposed (处理). Pollution is,in fact,threatening our existence (威胁我们的生存) .

    The earth is our home and we have the d 4   to take care of it for ourselves and for our later generations. Fortunately,more and more people have r 5   these problems. Measures have been taken to cope with these problems b 6   the government. Laws have been passed to stop p 7  . I hope the problem will be solved in the near future and our home will b 8   better and better.

1.   2.   3.   4.  

5.   6.   7.   8.  

5.我们应该采取正确的行动来保护野生动物。

We should  protect wild animals.

4.空气污染对我们的健康有害。

Air pollution  our health.