Which of the following is true about the expressed sequence tags? The author’s main purpose in writing this passage is to _____

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问题 Which of the following is true about the expressed sequence tags?
The author’s main purpose in writing this passage is to ______ .

选项 A、discuss the negative effects of patenting genes
B、face possible moral consequences of patenting genes
C、condemn the selfishness of researchers who patent genes
D、weigh the advantages and disadvantages of patenting genes

答案A

解析作者在首段末句提出了论点：申请基因专利引发了诸多的争议。随后的各段，作者逐一指出了申请基因专利的负面影响及其带来的经济、伦理等各方面的问题，故[A]为答案。

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大学英语六级

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Which of the following is true about the expressed sequence tags? The author’s main purpose in writing this passage is to _____

大学英语六级

Everybodyhasanopinionabouttelecommuting(远程办公)."Itwon’tworkinmostjobs","Itcoststoomuch","Itreducesairpollution

A—WaitingandBoardingJ—CustomsDeclarationFormB—LuggageDeliveryK—QuantityAllowedtoTakeC—InspectionandQuarantineL—Re

TheUniversityBookstoreisaself-supportinguniversity-ownedorganization,whichwasfoundedin1921.Itprovidesstudents,fa

A—StockexchangeK—StocktransferB—BuyingandsellingstockL—StockcompanyC—StockmarketM—SharecapitalD—Currentpricesof

Thebossgavehimaraiseinsalarybecauseofhisexcellent(perform)______atwork.

Thefollowingisalistoftermsrelatedtoautomobile.Afterreadingit,youarerequiredtofindtheitemsequivalenttothose

Scientistsfindthathard-workingpeoplelivemuchlongerthanaveragemenandwomen.Careerwomenarehealthierthanhousewives

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设z＝f(u，v)，u＝φ(χ，y)，v＝ψ(χ，y)具有二阶连续偏导数，求复合函数z＝f[φ(χ，y)，ψ(χ，y)]的一阶与二阶偏导数．

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