新概念第四册第2课练习题及答案

新概念第四册第2课练习题及答案Unit2BCBDCACAADBC

新概念英语第4册第2课课后习题:

Multiplechoicequestions多项选择题

Choosethecorrectanswerstothefollowingquestions.

Comprehension理解

1Spidersareourfriendsbecausethey____.

a.arebeneficialinsects

b.destroyinsectswithouthurtingusinanyway

tectinsect-eatinganimals

d.includesomeofthegreatestenemiesofthehumanrace

2Birdsandbeasts____.

a.eatasmanyinsectsasspiders

b.eatmoreinsectsthanspiders

c.can”tcomparewithspidersasdestroyersofinsects

d.destroyalargerfractionofinsectsthanspiders

3Ifspiderswereinsects,theywould____.

a.haveeightlegs

b.havesixlegs

c.beabletofly

d.notdestroytheirownkind

4Spidersareactiveinkillinginsects____.

a.allthetime

b.formostoftheyear

hesummermonths

d.foraminimumofsixmonthsofeachyear

Structure句型

5Itwould____impossibleforustoliveinthisworldifinsectshadnoenemies.(11.2-3)

a.makeit

b.stay

c.be

d.haveit

6Weowe____tothebirdsandbeastwhoeatinsects.(1.4)

a.agreatdeal

b.alotof

c.agreatmany

d.muchof

7Howmanyspidersareinvolved____thisworkonourbehalf?(1.9)

a.at

b.for

c.in

d.to

8Therearemanydifferent____spiders.(1.11)

a.sortsof

b.kindof

c.typeof

d.kinds

Vocabulary词汇

9Spiders____insects.(11.3-4)

a.defendusfrom

b.guard

tect

d.insureusagainst

10Youcanseeataglancethatspidersarenot____insects.(1.7)

a.similar

b.liketo

c.as

d.thesameas

11Spidersarecreatureswithlarge____.(1.13)

a.hunger

b.appetites

c.desires

d.eating

12Spidersliketoeatmorethan____aday.(1.13)

a.three

b.threetime

c.threetimes

d.threes

Comprehension理解

Giveshortanswerstothesequestionsinyourownwordsasfaraspossible.Useonecompletesentenceforeachanswer.

1Whyhavewereasontobegratefultoinsect-eatinganimals?

2Howcanwetellthedifferencebetweenaspiderandaninsect?

3Whatdoyouunderstandbythestatement‘Oneauthorityonspidersmadeacensusofthespidersinagrassfield…’?(11.9-10)

Vocabulary词汇

Refertothetexttoseehowthefollowingwordshavebeenused,thenwritesentencesofyourownusingthesewords:destroy(1.1);devour(1.3);fraction(1.5);belongings(1.6);estimated(1.10).

Sentencestructure句子构造

ACombinethefollowingsentencestomakeonecomplexstatementoutofeachgroup.Makeanychangesyouthinknecessary,butdonotalterthesenseoftheoriginal.Donotrefertothepassageuntilyouhavefinishedtheexercise:

1Moreover,spidersareunlikesomeoftheotherinsecteaters.Theyneverdotheleastharmtousorourbelongings.(11.5-6)

2Spidersarenotinsects.Theyarenotevennearlyrelatedtothem.Manypeoplethinktheyare.(1.7)

3Onecantellthedifferencealmostataglance.Aspiderhaseightlegs.Aninsectneverhasmorethansix.(11.7-8)

4Howmanydotheykill?Itisimpossibletomakemorethanthewildestguessatthis.Theyarehungrycreatures.

Theyarenotcontentwithonlythreemealsaday.(11.12-13)

BCompletethefollowingsentencesinanywayyouwish.Thencomparewhatyouhavewrittenwiththesentencesinthepassage:

1Why,youmaywonder,shouldspidersbeourfriends?Because____.(11.1-2)

2Weowealottobirdsandb