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【SharksareamongtheoldestanimalsonEarth.Therearehundredsofkindsofsharks.Mostareabouttwometerslong.Thedogfishsharkhoweverislessthantwentycentimetersinlength.Asharkhasanextremelygoodsenseofsmell.It】
更新时间:2024-04-27 19:34:03
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问题描述:

SharksareamongtheoldestanimalsonEarth.Therearehundredsofkindsofsharks.Mostareabouttwometerslong.Thedogfishsharkhoweverislessthantwentycentimetersinlength.Asharkhasanextremelygoodsenseofsmell.Itcanfindsmallamountsofmattersinwatersuchasbloodbodyliquidsandchemicalsproducedbyanimals.Thesepowerfulsenseshelpsharksfindtheirfood.Sharkseatfishothersharksandplantsthatliveintheocean.

Sharksgrowslowly.Aboutfortypercentofallsharkslayeggs.Theothersgivebirthtoliveyoung.Somesharkscarrytheiryounginsidetheirbodiesashumansdo.Somesharksarenotabletoreproduceuntiltheyaretwentyyearsold.Mostreproduceonlyeverytwoyears.Andtheygivebirthtofewerthantenyoungsharks.Forthisreasonover–fishingofsharksisofspecialdangertothefutureoftheanimal.

Sharksareimportantfortheworld’soceans.Theyeatinjuredanddiseasedfish.Theirhuntingactivitiesmeanthatthenumbersofotherfishinoceanwatersdonotbecometoogreat.Thisprotectstheplantsandotherformsoflifethatexistintheoceans.

Peoplehuntsharksforsportfoodmedicineandtheirskin.Expertssaytheinternationalmarketforsomekindsofsharkshasincreasedbecausemanypartsofasharkarevaluable.

Collectorspaythousandsofdollarsforthejawsofashark.SharkliveroilisapopularsourceofVitaminA.Theskinofasharkcanbeusedlikeleather.

InAsiapeopleenjoyakindofsoupmadefromsharkfins.Expertssayafishermancanearnalotofmoneyforevenonekilogramofsharkfins.SharksareamongtheoldestanimalsonEarthbutsomesharksareindangerofdisappearingfromEarth.Iftoomanysharksinoneareaarekilledthatgroupofsharksmayneverreturntonormalpopulationlevels.

1.Whichofthefollowingwordsbestdescribesthesituationsharksarein?

A.Good. B.Endangered. C.Powerful. D.Expensive.

2.Thepopulationofsharksisbecomingsmallerandsmallerasaresultof .

A.hunting B.lackoffood C.diseases D.theirpoorability

3.Sharkseatotherfish .

A.whichisathreattootherformsoflifeintheoceans

B.whichisaprotectionforotherformsoflifeintheo

柴苍修回答:
  1.A2.B3.D4.C5.A
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