OG13 In a review of 2,000 studies of human behavior

beyondgmatqin

In a review of 2,000 studies of human behavior that date back to the 1940s, two Swiss psychologists, declaring that since most of the studies had failed to control for such variables associal class and family size, none could be taken seriously.

(A) psychologists,declaring that since most of the studies had failed to control for such variables as social class and family size,

(B) psychologists,declaring that most of the studies failed in not controlling for such variables like social class and family size, and

(C) psychologists declared that since most of the studies, having failed to control for such variables as social class and family size,

(D) psychologists declared that since most of the studies fail in controlling for such variables like social class and family size,

(E) psychologists declared that since most of the studies had failed to control for variables such as social class and family size

beyondgmatqin

选E，理由如下：A)declaring 时态不对，应该为过去

B）除了时态之外，意思也和原文相反

C)since从句中无谓语动词

D)前后时态不一样

beyondgmatqin

1940s, two Swiss psychologists, declaring that since most of the studies had failed to control for such variables as social class and family size, none could be taken seriously.
(A)  psychologists, declaring that since most of the studies had failed to control for such variables as social class and family size,
(B)  psychologists, declaring that most of the studies failed in not controlling for such variables like social class and family size, and
(C)  psychologists declared that since most of the studies, having failed to control for such variables as social class and family size,
(D)  psychologists declared that since most of the studies fail in controlling for such variables like social class and family size,
(E) In a review of 2,000 studies of human behavior that date back to the 1940s, two Swiss psychologists declared that since most of the studies had failed to control for variables such as social class and family size, none could be taken seriously.

beyondgmatqin

周老师解释：Verb form; Diction
The subject of the sentence, two Swiss psychologists, needs a main verb. The -ing verb form declaring cannot, on its own, be the main verb of a correct English sentence. Furthermore, the clause that addresses the reason for not taking the studies also seriously needs a subject (most of the studies) and a verb (had failed).
A.psychologists缺谓语
B.psychologists缺谓语； failed in not controlling awkward且意思不同于failed to control for； such like错
C.having failed不能作从句主语most of the studies的谓语，缺谓语
D.fail与declared时态不一致； such like错

myice

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weaoao

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tianya

谢谢楼主了

有何不可

谢谢楼主！不错。