自主预习第1题答案
He is not only a scientist but also a poet.
自主预习第2题答案
It's on the top floor.so we'd better take the lift.
自主预习第3题答案
We should pay attention to keeping our classroom clean.
自主预习第4题答案
He asked me to marry him and I accepted.
自主预习第5题答案
John wanted to go to the party， but his wife said that she was too tired.
随堂反馈答案
1、Smoking is harmful to your health.
2、C
3、So， it is foolish to judge a person only by his appearance.
4、A
5、Humans can not only make deserts， but also prevent theirgrowth.
6、D
7、无
8、B
课后巩固答案
1、c b a d
2、C
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