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1、Unit 4 Astronomy the science of the stars.单句语法填空1Reading in bed will do harm _ your eyes.2It is impossible for a cock to lay _ (egg)3(2015浙江，16)If steel is heavier than water，why are ships able _ (float)on the sea?4(2014江西，阅读A)In his black and blue suit and with _ oxygen tank fastened on his back，La
2、rry dived from boats into the middle of the ocean.5(2014福建，阅读B)The climate here _ (be)quite pleasant，the temperature rarely，if ever，reaching 30 in summer.6Our success depends _ whether everyone works hard.7(2015陕西，阅读C)The destruction of such species could prevent researchers _ (find)cures for certai
3、n diseases.8It was difficult for the helicopters _ (get)close to the roof of the building because of the heavy smoke.9(2013天津，6)We have launched another manmade satellite，_ is announced in todays newspaper.10Now that they have computers，it becomes _ (easy)to deal with the problems.答案1.to2.eggs3.to f
4、loat4.an5.is6.on 7finding8.to get9.which10.easier.单句改错1If you put your heart into it，youll succeed on time.2This is such interesting a film that I have seen it twice.3Its no longer a question now that whether man can land on the moon.4Whether life will continue on the earth for millions of years to
5、come will depend on if this problem can be solved.5General speaking，he is a smart boy except his carelessness.6The river is so polluted that every day we can see a lot of things being floating on the water.答案1.onin2.suchso3.去掉whether4.ifwhether 5.GeneralGenerally6.去掉being.课文浓缩语法填空 The explosion of t
6、he earth produced water vapour，_1_ turned into water when the earth _2_(cool)down.Water allowed the earth to dissolve harmful gases into the oceans and seas.That made _3_ possible for life to begin to develop.The _4_(arrive)of small plants encouraged the development _5_ early shellfish and all _6_(s
7、ort)of fish.Many millions of years later the first green plants began to appear on land._7_(late)land animals appeared.Some were insects.Others，called amphibians，_8_(be) able to live on land as well as in the water.Finally，some small clever animals appeared and spread all over the earth.But they tre
8、at the planet in an _9_(friend)way，and the earth becomes too _10_(pollute)答案1.which2.cooled3.it4.arrival5.of 6sorts7.Later8.were9.unfriendly10.polluted.单元考点作文串记一、根据提示翻译句子1我们能否登上火星依赖于科学技术的发展。(land，depend on)_2火星上没有氧气，昼夜温差大，这使我们不能生活在那里。(make itadj.)_3火星与地球环境完全不同。(be different from)_4如果我们想到火星上住些日子，我们要带
9、上氧气、食物、衣服等。(take along.with)_5我坚信不久的将来我们一定能成功地登上火星。(succeed in doing)_答案1.Whether we can land on Mars depends on the development of science and technology.2There is no oxygen on Mars and the temperature changes greatly from day to night，which makes it impossible for us to live there.3The environment
10、 of Mars is quite different from that of our earth.4If we want to stay on Mars for a few days，we should have to take along our own oxygen，food，clothing and so on with us.5I firmly believe that we will succeed in landing on Mars in the near future.二、连句成篇【参考范文】Whether we can land on Mars depends on th
11、e development of science and technology.There is no oxygen on Mars and the temperature changes greatly from day to night，which makes it impossible for us to live there.As we all know，the environment of Mars is quite different from that of our earth.In fact，if we want to stay on Mars for a few days，we should have to take along our own oxygen，food，clothing and so on with us.However，I firmly believe that we will succeed in landing on Mars in the near future.3