According to Dr. Nora Volkow, the use, of drugs According to the text, anyone may be addicted to drugs if they

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问题 According to Dr. Nora Volkow, the use, of drugs
According to the text, anyone may be addicted to drugs if they

选项 A、are born with a predisposition to addiction.
B、use certain chemicals long and frequently enough.
C、have sufficient drugs or alcohol to use.
D、create an all consuming pattern of uncontrollable craving.

答案B

解析条件细节题。文章第二段尾句说"由于上瘾涉及这些基本的大脑功能，每一个人都可能成为瘾君子，如果充分地沉浸于毒品或酒精中"，因此，任何人成为瘾君子的条件就是他们"长时间、足够频繁地使用某种化学物质"。

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考研英语一

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According to Dr. Nora Volkow, the use, of drugs According to the text, anyone may be addicted to drugs if they

考研英语一

WelearnfromthefirstparagraphthatWecanlearnedfromthetextthatcloningtechniqueswouldbeappliedto

Asoneworkswithcolorinapracticalorexperimentalway,oneisimpressedbytwoapparentlyunrelatedfacts.Colorasseenis

About40percentofAmericansthinkofthemselvesasshy,whileonly20percentsaytheyhaveneversufferedfromshynessatsom

About40percentofAmericansthinkofthemselvesasshy,whileonly20percentsaytheyhaveneversufferedfromshynessatsom

ThepollutionofHongKong’sbeachesbyoilfromadamagedtankerlastyearrecallsasimilarincidentwhichtookplaceinBrita

Therehasbeenadiscussionrecentlyontheissueoftraditioninanewspaper.Writeanessayofabout200wordstothenewspape

Mr.StonecipherhadtoleavehisjobbecauseTheword"whistleblower"(line1,paragraph4)mostprobablyreferstoapersonwh

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