1、Book 3Unit 4Astronomy: the science of the stars课文与语法填空阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。The earth was just 1 cloud of dust after the “Big Bang”.The earth exploded loudly with fire and rock. They were in time 2(produce) many things,which were to make the earths atmosphere. As the earth cooled down,wate
2、r began to appear on 3(it)surface. It allowed the earth to dissolve 4 (harm)gases. Then life began to develop.Small plants multiplied and 5(fill) the oceans and seas with oxygen. This encouraged the 6 (develop) of early shellfish and fish. Land animals such as insects,reptiles and dinosaurs appeared
3、 after green 7(plant) appeared. Small clever animals spread all over the earth. They are putting too much carbon dioxide into the atmosphere,8 prevents heat from escaping from the earth into space.9 life will continue on the earth for millions of years to come will depend on whether this problem can
4、 10 (solve).1.2.3.4.5.6.7.8.9.10.答案1.a考查冠词。a cloud of 一团。2.to produce考查非谓语动词。be to do sth. 表示不可避免将要发生某事。3.its考查代词。修饰名词surface,故用形容词性物主代词。4.harmful考查词性转换。修饰gases,需用形容词形式。5.filled考查时态。设空处与multiplied并列作谓语,故用filled。6.development考查词性转换。根据空前的the可知此处应填名词形式。7.plants考查名词单复数。此处泛指绿色植物,故用复数形式。8.which考查定语从句。先行词为
5、carbon dioxide,且定语从句中缺少主语,故用which。9.Whether考查连接词。句意:在未来的数百万年里地球上的生命是否会继续取决于这个问题能否被解决。结合句意可知填Whether。10.be solved考查语态。solve与problem之间为被动关系,故用被动语态。话题知识与写作.根据提示翻译下列句子。1.我们能登陆火星吗?这完全取决于科学和技术的发展。(depend on) 2.火星上几乎没有氧气,这使生命不可能存在。(make;exist) 3.中午的温度可能在零上50左右,而晚上的温度则在零下100左右。这使得我们无法在那里生活。(prevent.from.) 4
6、.既然火星与地球完全不同,如果我们有朝一日去火星的话,我们不得不带上我们自己的氧气、食物、衣服和住的地方。(now that) .将以上句子连成一篇语言流畅、用词准确、逻辑严密的短文。 答案.1.Can we land on Mars? It all depends on the development of science and technology.2.There is almost no oxygen on Mars and this makes it impossible for life to exist.3.It might be about 50 above zero at n
7、oon and 100 below zero at night, which prevents us from living there.4.Now that Mars is quite different from the earth, if we are to go to Mars one day, we have to take along our own oxygen, food, clothing and shelter.参考范文Whether we can land on Mars depends on the development of science and technolo
8、gy. There is almost no oxygen on Mars, which makes it impossible for life to exist. It might be about 50 above zero at noon and 100 below zero at night, which prevents us from living there. Now that Mars is quite different from the earth, if we are to go to Mars one day, we have to take along our ow
9、n oxygen, food, clothing and shelter.单元词汇拓展速记1.“太空”词块aerocraft n.飞行器 airplane n.飞机aircraft n.飞机,航空器astronomy n.天文学astronomer n.天文学家astronaut n.宇航员atmosphere n.大气,大气层gravity n.万有引力globe n.地球,地球仪launch vt.发射orbit n.轨道planet n.行星rocket n.火箭satellite n.卫星spaceship n.宇宙飞船telescope n.望远镜universe n.宇宙2.“阻止
10、/禁止”固定搭配prevent sb. from doing sth.stop sb. from doing sth.keep sb. from doing sth.ban sb. from doing sth.forbid sb. from doing sth.prohibit sb. from doing sth.3. “un-”词块unable adj.不能的unacceptable adj.不能接受的unbelievable adj.难以置信的,不可信的unclear adj.不清楚的uncertain adj.不确定的 uncomfortable adj.不舒适的unconditional adj.无条件的,绝对的unemployment n.失业,失业状态 unfair adj.不公平的,不公正的unfortunate adj.不幸的unknown adj.不知道的unlike prep.不像,和不同unrest n.不安;骚动unusual adj.不平常的,异常的unwilling adj.不乐意的
