Review Language Points and check Exs

1. Review Language Points and check Exs

2. 天文学 天文学家 生物化学 地球物理学 大气层；气氛 太阳系 猛烈的；激烈的； 固体；固体的 (使)爆炸；爆发 及时； 总有一天； 蒸汽 碳 二氧化碳 氧 氮 表面；外表； 表面的 行星 溶解； 解散 有害的；伤害的

3. 天文学 天文学家 生物化学 地球物理学 大气层；气氛 太阳系 猛烈的；激烈的；强暴的 固体；固体的 (使)爆炸；爆发 astronomy astronomer biochemistry geophysics atmosphere solar system violent solid explode

4. 及时； 总有一天；终于 蒸汽 碳 二氧化碳 氧 氮 表面；外表； 表面的 行星 溶解； 解散 有害的；伤害的 in time vapour/vapor carbon dioxide oxygen nitrogen surface planet dissolve harmful

5. of as geology mathematics combine 1 We usually think _____ science subjects _____ physics, chemistry, biology, _______ and _________. But some studies ________ two or more of these subjects. 2 What do we mean when we say we are studying a subject ___________. 3 After the “Big Bang”, the earth was just a cloud of _______ dust. 4 ______ it was to become was a _______ until the dust began to slowly _______ into a ball ________ around the sun. 5 The problem was ______ the earth became ________ because _____ was not clear ______ the solid shape was to _______ or not. scientifically energetic mystery What combine moving that violent it whether last

6. exploded which were in time which were 6 It _______ loudly with fire and rock, ______ _____ _____ _____ to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, ______ _____ to make the earth’s atmosphere. 7 ____ the earth _____ ______, water began to _______ on its surface. 8 Nobody knew that it was going to be different from other ______ _____ round the sun. 9 Water had already _______ from … but it ______ on the earth. 10 This is _____ the earth began to show its special _________. As cooled down appear planets going disappeared stayed how qualities

7. dissolve which had into • It allowed the earth to _______ harmful gases, ______ _____ become part of earth’s atmosphere, ____ the oceans and seas. • That made ____ possible for life to begin to develop. • ______ scientists think is that the earth was different because of the _______ of small plants _______ in the water on its surface. • They _______ and ______ the first oceans and seas ______ oxygen. • This _______ the development of early shellfish and all sorts of fish. it What arrival growing multiplied filled with encouraged

8. taking filling appeared. Some 16 Scientists believe that ______ carbon dioxide from the atmosphere and _______ the air with oxygen helped life to develop. 17 Later land animals _________. ______ were insects. ______, ______ amphibians, were able to live on land ____________ in the sea. 18 They produced ______ ______ by _____ eggs. … They _____ eggs too. 19 They were the _____ group of animals and they were different because they produced their young ______ ______ their bodies. 20Small clever animals, now ______ hands and feet, appeared and ______ all over the earth. They _________ new methods of growing food, _______ and _______ around. Others, called as well as young generally laying laid last from within with spread developed hunting moving

9. As time have become on 21 ______ ______ went by they covered the earth and ______ _____ the most important animals _____ the planet. 22 They _____ ______ too much carbon dioxide into the atmosphere, _____ _________ heat from ________ from the earth into ______ . 23 ________ life will continue on the earth for millions of years ___________ will ______ __ ________ this problem can be solved. are putting which prevents escaping space Whether to come depend on whether

10. EX1 on P27 solid violent astronomy generally prevent…from… planet development explode surface method Exercises 2 on page 28: astronomy explode surface solid planet changes Exercises 4: D B C B

11. Exercise 1. We all think ___ Li Ming as our friend. A about B over C of D up We usually think of science subjects as physics, chemistry, biology and mathematics. think of … as = consider/regard… as 把…当作 （以为）….

12. ----Will you skiing with me this summer vacation? ---- It ______. A all depend B all depends C is all depended D is all depending That / It ( all ) depends.很难说，看情况而定 depend on 一般不用于进行时和被动语态。 depend on sb / sth for sth (to do sth) They depend on their parents for the food . They depend on the workers to carry out the plan.

13. 3. ____ fashion differs from country to country may reflect the culture differences from one aspect. A what B That C This D Which 4. The use of the word “cost “ is ____ from ____ of the word “ spend”. A different; that B difference; that C different; one D difference; the one

14. Use N-clause to make sentences: 1。那就是我们的问题所在。 2。 事实是我们已经输了这场比赛。 3。 她总在想如何能把工作干好。 4。 我不知道我能否活到明天。 That is where our problem lies. The fact is that we have lost the game. She always thinks of how she can work well. I don’t know whether I could survive until tomorrow.

15. 何时何地举行这个会议还没有决定。 • 晚会能否如期举行要依天气而定。 When and where the meeting will be held hasn’t been decided. Whether the meeting will be held on time depends on the weather. 7. 他不喜欢这个方案和我不相干。 That he didn’t like the program was none of my business.