人教版（新课程标准） 必修3 Unit 4 Astronomy the science of the stars课时作业含解析（4份打包）.zip

Unit 4　Astronomy：the science of the stars
课时作业13　Warming Up & Reading
Ⅰ.单词拼写
1．Scientists do not know how much and what kinds of noises are harmful (有害的) to ocean animals.
2．Mammals exist (存在) when the animals that were harmful to them disappeared.
3．Hand washing can prevent (阻止) the spread of many infections (感染)．
4．In his book, he explained the operating theories (理论) of computers in detail.
5．Man can't live without oxygen (氧气)．
6．The younger generation tell me that religion (宗教) is “old hat” and science has proved this.
7．These computers are a puzzle (难题) to me.
8．With so many problems arising, the system (制度) should be improved.
9．Thirty­one people have been injured in violent (暴力的) incidents throughout the day.
10．As is well known, fresh air is fundamental (基本的) to good health.
Ⅱ.单句语法填空
1．It is uncertain whether he'll succeed in passing the driving test or not.
2．His decision made it possible for us to finish the work by four o'clock this afternoon.
3．Each of us in turn had to describe how alcohol had affected our lives.
4．The situation in that country should be_prevented (prevent) from becoming worse.
5．You needn't worry because this snake is harmless (harm)．
6．My relationship with the actors is fundamental to my work as a director.
7．If you give up this chance, you'll regret it in time.
8．Look at the pictures and take turns to_tell (tell) the story