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1、 新概念英语第四册第2课练习题及答案Unit 2 BCBDC ACAAD BC新概念英语第4册第2课课后习题:Multiple choice questions 多项选择题Choose the correct answers to the followingquestions.Comprehension 理解1 Spiders are our friends because they _.a.are beneficial insectsb.destroy insects without hurting us in any wayc.protect insect-eating animalsd.
2、include some of the greatest enemies of the human race2 Birds and beasts _.a.eat as many insects as spidersb.eat more insects than spidersc.can”t compare with spiders as destroyers of insectsd.destroy a larger fraction of insects than spiders3 If spiders were insects, they would _.a.have eight legsb
3、.have six legsc.be able to flyd.not destroy their own kind4 Spiders are active in killing insects _.a.all the timeb.for most of the yearc.in the summer monthsd.for a minimum of six months of each yearStructure 句型5 It would _ impossible for us to live in this world if insects had no enemies.(11.2-3)a
4、.make itb.stayc.bed.have it6 We owe _ to the birds and beast who eat insects.(1.4)a.a great dealb.a lot ofc.a great manyd.much of7 How many spiders are involved _ this work on our behalf?(1.9)a.atb.forc.ind.to8 There are many different _ spiders.(1.11)a.sorts ofb.kind ofc.type ofd.kindsVocabulary 词汇
5、9 Spiders _ insects.(11.3-4)a.defend us fromb.guardc.protectd.insure us against10 You can see at a glance that spiders are not _ insects.(1.7)a.similarb.like toc.asd.the same as11 Spiders are creatures with large _.(1.13)a.hungerb.appetitesc.desiresd.eating12 Spiders like to eat more than _ a day.(1
6、.13)a.threeb.three timec.three timesd.threesComprehension 理解Give short answers to these questions in your ownwords as far as possible.Use one complete sentencefor each answer.1 Why have we reason to be grateful to insect-eating animals?2 How can we tell the difference between a spiderand an insect?3
7、 What do you understand by the statementOneauthority on spiders made a census of the spiders in a grass field?(11.9-10)Vocabulary 词汇Refer to the text to see how the following words have been used, then write sentences of yourown using these words: destroy (1.1); devour (1.3); fraction (1.5); belongi
8、ngs (1.6);estimated (1.10).Sentence structure 句子构造A Combine the following sentences to make one complex statement out of each group.Makeany changes you think necessary, but do not alter the sense of the original.Do not refer tothe passage until you have finished the exercise:1 Moreover, spiders are
9、unlike some of the other insect eaters.They never do the least harm tous or our belongings.(11.5-6)2 Spiders are not insects.They are not even nearly related to them.Many people think theyare.(1.7)3 One can tell the difference almost at a glance.A spider has eight legs.An insect never hasmore than s
10、ix.(11.7-8)4 How many do they kill? It is impossible to make more than the wildest guess at this.Theyare hungry creatures.They are not content with only three meals a day.(11.12-13)B Complete the following sentences in any way you wish.Then compare what you have writtenwith the sentences in the passage:1 Why, you may wonder, should spiders be our friends? Because _.(11.1-2)2 We owe a lot to birds and beasts who _.(11.4-5)3 One authority on spiders _.(11.9-10)4 It has been estimated that _.(11.13-15)C Write three sentences saying why you like or dislike spiders.
