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一鼓作气
（课中强化类训练）
●Exercises for new words（生词专练）
Ⅰ.Match words in A and B which are related to each other. (将A与B中有关联的单词搭配在一起。)
A:boil rust expand tongs contract dissolve reaction B:crucible cool oxide liquid conclusion heat steam
答案:boil—steam rust—oxide expand—heat tongs—crucible contract—cool dissolve—liquid reaction—conclusion
Ⅱ.Complete the sentence with a suitable word. (用合适的单词完成下列句子。)
1.What’s the _______(3 letters) of this experiment?
2.We use________(11 letters) to provide power for machines.
3.It is time for us human beings to take measures to protect all living things to keep the_______(7 letters) of nature.
4.We students should go to bed early and get up early to _______(4 letters) a good habit.
5.Both teachers and students in our school are deeply impressed by Professor Smith’s_______(7 letters).
6.Our school was built just a year ago with many advanced teaching________(10 letters). 7.I was________(10 letters) when I heard the hospital had burnt down.
8.Jack,can you see something red_______(8 letters) in the distance on the water?
答案:1.aim 根据常识推断,应该说“实验的结果(result)/结论(conclusion)或目的(aim)”都可,又因只有三个字母,所以用aim 2.electricity 3.balance keep the balance of nature 4.form form a good habit of...为固定词组,意为 5.lecture 按常识推断,
6.facilities 设备可表示为facility或equipment,但equipment不可数。在本题中many修饰facility,所以用facility
7.astonished 本句意为“当听到医院烧成平地的消息时, 8.floating 本句意为“你能看见远处水上漂着红色的东西吗？”。float与something构成主谓关系,且表示正在进行的动作,所以用float的现在分词形式。
●Exercises for phrases（短语专练）
Ⅲ.Complete each sentence with the preposition below. (用下面的介词完成句子。) of out in from at
1.The reaction of metals with these substances can be put_______ order. 2.Write out each corrected sentence _______ least once. 3.Do an experiment to find _______ if iron rusts in dry air.
4.Try to learn _______ your mistakes,and you’ll make progress. 5.Two thirds _______ the earth’s surface is water. 答案:1.in put...in order为固定搭配, 2.at at least为固定搭配,
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3.out 固定短语find out 4.from learn from... 5.of of表示所属关系,
Ⅳ.Complete the sentences with these phrases. (用所给的短语完成句子。)
add...to in the area of be proud of be interested in react with be supposed to at the bottom of keep out of used to
1.Many great discoveries have been made _______ _______ _______ _______ science.
2.We _______ all _______ _______ the Chinese athletes’ success during the 28th Olympic Games.
3.Mr.Smith _______ _______ smoke but he has given it up. 4.Please _______ some sugar _______ the tea.
5.Iron _______ _______ water and air to produce rust.
6.There are some underwater plants _______ _______ _______ _______ the tube. 7.You _______ _______ _______ clean the blackboard and the classroom today. 8.I _______ very _______ _______ English.
9._______ the dog _______ _______ the room.Don’t let it in. 答案:1.in the area of in the area of
2.are;proud of 短语be proud of意为“对……感到自豪”,we作主语用are 3.used to used to do意为“过去常常做某事(但现在不做了) 4.add;to add...to... 5.reacts with react with意为 “与……反应”,iron为不可数名词,故用 reacts 6.at the bottom of at the bottom of 7.are supposed to are supposed to do在本句中相当于should do, 8.am;interested in 9.Keep;out of keep...out of
●Exercises for sentence structure（句子结构专练）
Ⅴ.Choose the right description of the words underlined in each sentence. (选出对句子画线部分单词描述正确的选项。)
1. ...and these are always very interesting,as the lecturers are people who have made real discoveries in their area of science. A.方式状语 B.原因状语
答案:B as在本句中意为“因为”,
2.Here is a table with the metals that react most at the top,and the metals that react at the bottom. A.表语 B.主语
答案:B 这是一个倒装句,a table是主语。在以here,there,now,then等副词开头的句子中,要用完全倒装。本句的正常语序是“A table with...is here. 3.It is hard to think of a world without metals. A.状语
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▁▂▃▄▅▆▇█▉▊▋▌精诚凝聚 =^_^= 成就梦想 ▁▂▃▄▅▆▇█▉▊▋▌
B.主语
答案:B 本句中it为形式主语,
4.The Nobel Prize is the highest scientific prize there is,so we should be very proud of that. A.定语 B.状语
答案:A there is在本句中作定语,修饰prize 5.I’m becoming more and more interested in physics. A.表程度 B.表数量
答案:A more and more意为“越来越……”,修饰多音节和部分双音节形容词,
Ⅵ.Complete Sentence B according to Sentence A.(根据A句完成B句。) 1.A:If you work harder,you will make greater progress.
B:_______ _______ you work,_______ _______ _______ you will make.
2.A:The chairman thought that it was necessary to invite Professor Smith to speak at the meeting.
B:The chairman thought _______ _______ to invite Professor Smith to speak at the meeting. 3.A:Generally speaking,if the camera is more expensive,its quality will be better.
B:Generally speaking,_______ _______ _______the camera,_______ _______its quality. 4.A:There are 64 students in our class.48 of them are girls.
B:There are three times _______ _______ _______ as boys in our class. 5.A:Two out of five students in our class are girls.
B:_______ _______ _______the students in our class are girls.
答案:1.The harder;the greater progress 本题考查了“the more...,the more...”这一句型。在这个句型中,前一部分表条件,相当于if条件句,后一部分表结果, 2.it necessary think既可接it is/was+adj.+to do句子作宾语从句（其中it作形式主语）,又可接it+adj.+to do作复合宾语（其中it作形式宾语）。
3.the more expensive;the better 在“the more...,the more...”句型中,可以省略谓语(甚至主语谓语一起省略)
4.as many girls 在“as...as”结构中通常把名词放在两个as 5.Two fifths of two out of five意为“五个中有二个”，与two fifths of...(五分之二)意思相同。
●Exercises for function items（交际用语专练）
Ⅶ.Choose the proper items that mean the same as these below. (选出与下列句子意义一致的选项。) 1.Where do we go from here?________ A.You’ve understood. 2.Keep the noise down. B.You’re next. 3.You’ve got it!
C.What shall we do next? 4.Go ahead! D.Talk quietly.
5.It’s your turn now.
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