GRE考试

根据网考网考试中心的统计分析，以下试题在2017/10/23日GRE考试习题练习中，答错率较高，为：43%
【单选题】 Despite the______, Alzheimer's researchers are still______about the prospects for immunization, though most agree that more results are needed from humans for us to truly understand immunization's effects.
A．(A) advances… thrilled
B．(B) obstacles … uncertain
C．(C) setback… optimistic
D．(D) publicity … divided
E．(E) pessimism … unconvinced

网考网参考答案：C，答错率：43%
网考网试题解析：
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