求助 SC大全 300

allandu · 发表于 2010-8-13 19:12:53

300. Following the destruction of the space shuttle Challenger, investigators concluded that many key people employed by the National Aeronautics and Space Administration and its contractors work an excessive amount of overtime that has the potential of causing errors in judgment.
(A) overtime that has the potential of causing
(B) overtime that has the potential to cause
(C) overtime that potentially can cause
(D) overtime, a practice that has the potential for causing
(E) overtime, a practice that can, potentially, cause

我明白答案为啥是E,但是不明白为啥题干中的是its contractors work, 而不需要用worked?

kking · 发表于 2010-8-13 19:26:49

是对一般事实规律的总结.用一般现在时.
而且跟后文的时态一致.

求助 SC大全 300

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