最佳答案:

　　A:1、c

　　2、a

　　3、c

　　4、b

　　5、a

　　B：1、increase

　　2、proper

　　3、makes a difference

　　4、act as

　　5、recycled

　　6、in danger

　　7、role model

　　8、guess

　　9、habit

　　10、took action

最佳答案:

　　A：1、the same

　　2、different

　　3、different

　　4、the same

　　B：1、the same, as

　　2、 different from

　　3、the same

　　4、the same as

　　5、the same

　　6、like

　　7、the same, as

　　8、different

　　9、the same, as

最佳答案:

　　A：1、b

　　2、c

　　3、b

　　4、b

　　5、d

　　6、c

　　B：(1) is native to

　　(2) fastest growing

　　(3) as short as

　　(4) 40 metres

　　(5) 100 feet

　　(6) in many ways

　　(7) delicious to eat

　　(8) it was believed

最佳答案:

　　A：1、d

　　2、c

　　3、d

　　4、c

　　5、a

　　6、d

　　B：1、b

　　2、c

　　3、b

　　4、a

　　5、b

最佳答案:

　　A：1、Can you guess the result of this match?

　　2、She has mountains of homework to do tonight.

　　3、His words made a difference to my decision.

　　4、This car was destroyed in the accident.

　　5、Can you act as a secretary?

　　B：1、She was late for the meeting because of the heavy snow.

　　2、These cleaning materials do no harm to the environment.

　　3、The price of meat has got higher.

　　4、Hard work has led to his success.

　　5、Giant pandas are endangered animals today.

　　C Protecting grass

　　As we all know, grass is our friend. It can release oxygen into the air and help clean the air. In summer, it can reduce the temperature. But some people are destroying our friend. There is less and less grass every year. So it's necessary to protect grass as soon as possible,

　　To protect grass, first of all/ we shouldn't water grass regularly and cut it properly. In this the environment better.

最佳答案:

　　1、F

　　2、T

　　3、T