GRE考试

根据网考网考试中心的统计分析，以下试题在2019/9/8日GRE考试习题练习中，答错率较高，为：52%
【单选题】 In the passage, the author is primarily concerned with
A．(A) presenting a hypothesis and describing compelling evidence in support of it
B．(B) raising a question and describing an important discovery that led to an answer
C．(C) showing that a certain autoimmune disease cannot yet be treated effectively with drugs
D．(D) explaining what evidence exists for an autoimmune cause for narcolepsy
E．(E) discussing the importance of research on animals for the study of human disease

网考网参考答案：D，答错率：52%
网考网试题解析：
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