Unit 2 Saving the earth.Topic 2 All these problems are very serious
模块二：自主学习 (独立进行）预时20分钟(Self-study & Self-exploration)
模块三：交流研讨 (小组交流、合作、展示)预时30分钟 (Cooperation ，Exploration &Show)
(heavy). 2.Forests can stop the water from ____ (wash) the earth away. 3. They (cut) down too many trees since last year. 4. Remember ______ (turn ) off lights when you leave your room.
5. It’s very ________ (importance) to protect our environment.
二、单项选择。 ( ) 1. My hometown has changed _____ a new one in the last three years.
A. in B. to C. with D. into
( ) 2. All the students have gone on a field trip. There is ______in the classroom. A. somebody B. anybody C. everybody D. nobody
( ) 3. – I’m tired of eating western fast food. Could you give me ____ to eat? – Sure. What about jiaozi?
A. nothing else new B. something else new C. everything new else D. anything else new
( ) 4. Her parents tried to stop her _____ him, but they failed.
A. see B. seeing C. to see D. to seeing
( ) 5. – Would you please _____ your radio? Your father is sleeping.
– Sorry, I’ll do it right now.
A. turn off B. blow off C. turn on D. blow away
( ) 6. Remember ______ off the light before you leave the room.
A. turning B. turn C. to turn D. turns
( ) 7. Eating too much is _______ to your health.
A. useful B. helpful C. harmful D. wonderful ( ) 8. Parents should prevent the children _______ taking medicine by themselves.
A. about B. from C. with D. of
( ) 9. _______ we were quite tired, _____ we still went on working.
A. Although; / B. Because; / C. Because; so D. Although; but
( ) 10. The farmer _____ a lot of trees and built a new house.
A. turned off B. cut off C. turned down D. cut down
今日一得 今日不足 ___ 1. What bad weather! The wind is blowing (strong) and the rain is raining