GRE考试

根据网考网考试中心的统计分析，以下试题在2017/11/21日GRE考试习题练习中，答错率较高，为：70%
【单选题】 According to the passage, the fireball which emits the initial GRBs differs from the stage in which it produces aftershocks in that
A．(A) the former lacks the accelerated velocity of the latter
B．(B) the former is easier to observe than the latter
C．(C) the former has higher photon density than the latter
D．(D) the former contains a greater number of positrons than the latter
E．(E) the former is in a state of expansion while the latter is in a state of contraction

网考网参考答案：E，答错率：70%
网考网试题解析：
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