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1、 Unit 4 Astronomy: the science of the stars1 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,water
2、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 a
3、fter 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 1
4、0 (solve).1. 2. 3. 4. 5.6. 7. 8. 9. 10.2 课文与短文改错根据课文内容,对下面材料进行修改。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。Last month I paid a visit the moon with my friend. Before we left, I was told the force of gravity would change three time on our journey. Then we took up. As we left the earth, I became very h
5、eavily. Gradually the weight lessen. When I was in space, it was disappeared. We floated weightlessly in the cabin and I cheered up. When I was on the moon, I was surprise to find even walking needed a bit of practice now that gravity changed. Returning of the earth was very frightened. We were amaz
6、ed to watch fire broke out on the outside of the spaceship.3 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.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、
7、逻辑严密的短文。 答案精解精析1.课文与语法填空1.a2.to produce3.its4.harmful5.filled6.development7.plants8.which9.Whether 10.be solved2.课文与短文改错Last month I paid a visit the moon with my friend. Before we left, I was told the force of gravity would change three on our journey. Then we took . As we left the earth, I became
8、very . Gradually the weight . When I was in space, it was disappeared. We floated weightlessly in the cabin and I cheered up. When I was on the moon, I was to find even walking needed a bit of practice now that gravity changed. Returning the earth was very. We were amazed to watch fire out on the ou
9、tside of the spaceship.pay a visit to.拜访,为固定搭配。此处time表示“次数”,且前面有three修饰,故用复数形式。take up 占据,从事;take off起飞。此处指我们起飞了。become为系动词,后用形容词作表语。结合上下文可知,此处应该用一般过去时态。disappear为不及物动词,无被动语态。surprised吃惊的。return to the earth 回到地球。frightening令人害怕的。watch.do.观看做,强调看到动作的全过程。3.话题知识与写作.1.Can we land on Mars? It all depend
10、s 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 noon 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
11、 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 technology. 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 own oxygen, food, clothing an
