2017届高考英语一轮复习梯级训练： Unit 4（人教版必修3）

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　　梯级演练·强技提能

　　Ⅰ. 用所给词的适当形式填空

　　1. A(violence)tornado hit a village in China the other day.

　　2. As we all know, a bad eating habit is______ (harm)to one’s health.

　　3. Do you believe the______ (exist)of ghost?

　　4. He often says that he doesn’t believe in any______ (religious)and only believes in himself.

　　5. ______ (like)what he said, he didn’t carry out his promise.

　　6. There is a______ expression on his face because of the______ problem. (puzzle)

　　答案: 1. violent

　　2. harmful

　　3. existence

　　4. religion

　　5. Unlike

　　6. puzzled

　　puzzling

　　Ⅱ. 完成句子

　　1. (2017·安徽高考)It’s said that the power plant is nowwhat it was.

　　据说这个发电厂现在是过去的两倍大。

　　2. The houseby fire was rebuilt last week.

　　被大火烧毁的房子上周被重建起来了。

　　3. There were some leaveson the water.

　　有些叶子漂浮在水面上。

　　4. You ought to have a good restthe work.

　　既然已完成了工作, 你就应该好好休息一下。

　　5. Sledsare in common use in the Arctic.

　　狗拉的雪橇在北极地区很常用。

　　1. twice as large as

　　2. (which had been)pulled down

　　3. floating/which floated

　　4. now that you’ve finished

　　5. pulled by dogs

　　Ⅲ. 语篇完形

　　1. is widely accepted that the universe began with a“Big Bang”. After the“Big Bang”, the earth was still just a cloud of dust, and 2. ______ it was to become was uncertain. But between 4. 5 and 3. 8 billion years ago, the dust settled into a solid globe, which exploded 3. ______ (violent)with fire and rock. So many gases were produced and were to make the earth’s atmosphere. Water also appeared then, which was fundamental 4. ______ the development of life 5. ______ allowed the earth to dissolve harmful gases and acids into the oceans and seas.

　　6. ______ small plants began to appear on the surface of the water is the start of change. They helped develop early shellfish and all sorts of fish. Green plants grew on land too, which 7. ______ (follow)by land animals. Some of the animals produced young generally by 8. ______ (lay)eggs. 9. ______ time going by, mammals rose on the earth. They were different from all life forms in the past, because they gave birth to their baby animals and fed them by producing milk. Finally, some small clever animals appeared, but they didn’t take good care of the earth. So 10. ______ life will continue on the earth for millions of years to come is unknown.

　　答案: 1. It

　　2. what

　　3. violently

　　4. to

　　5. and

　　6. That

　　7. were followed

　　8. laying

　　9. With

　　10. whether

　　Ⅳ. 话题写作

　　根据提示, 利用本单元所学知识, 完成下面的小作文。

　　1. 火星上有生命吗? 不知道。我们能登陆火星吗? 这完全取决于科学技术的发展。(depend on)

　　2. 火星上没有氧气, 中午的温度可能在50度左右, 而晚上则在零下100度左右。这样我们就不能在那里生活。(prevent. . . from. . . )

　　3. 既然火星与地球完全不同, 如果我们计划有朝一日去火星的话, 我们就要带上氧气、食物、衣服和住的地方。(now that)Is there life on Mars? We don’t know. Can we land on Mars? It all depends on the development of science and technology. Man has known a little about Mars. There is almost no oxygen on Mars. It might be about 50 degrees above zero at noon and 100 degrees below zero at night, which prevents us from living there. Now that Mars is quite different from our earth, if we are to go to Mars one day, we should have to take along our own oxygen, food, clothing and shelter.