GMAT语法问题Q19:Recently phys - 已解决

GMAT语法问题Q19:Recently physicians have determined that stomach

GMAT语法问题

Q19:

Recently physicians have determined that stomach ulcers are （not caused by stress,alcohol,or rich foods,but ）a bacterium that dwells in the mucous lining of the stomach.

A.not caused by stress,alcohol,or rich foods,but

B.not caused by stress,alcohol,or rich foods,but are by

C.caused not by stress,alcohol,or rich foods,but by

D.caused not by stress,alcohol,and rich foods,but

E.caused not by stress,alcohol,and rich foods,but are by

原题的括号部分为下划线,百度里面打不出来就用括号代替了...虽然答案选了C,但是A跟原文一样,是不是以后遇到这种跟原文一样的都不能选呢?

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1个回答

不是不能选原文,而是看原文是不是最佳选项.

这道题中,A如果在but 后面加上caused by就更好了,所以不能选A.

相反,C把not移到了caused后面,but后又加了by,简直不能再完美了.

所以答案是C而不是A.

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