考研英语
A.if
B.unless
C.as
D.lest
【考查重点】逻辑衔接
【解题过程】本题目选择连词,体现句子之间的逻辑关系。由ran,would可知,本句使用了虚拟语气,是对动物可能对人类进行实验进行了假设,故选A。选项B. unless 除非;C. as因为;D lest 唯恐,均不符合题意。
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A.moderate
B.overcome
C.determine
D.reach
A.at
B.for
C.after
D.with
A.Above all
B.After all
C.However
D.Otherwise
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