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标题: 关于WHILE [打印本页]

作者: zhaoyiqing 时间: 2010-2-27 12:05
标题: 关于WHILE

Performing a risky maneuver that required precision flying, not only did space shuttle astronauts

retrieve an orbiting satellite, it was done simultaneously while avoiding being rear-ended by a

passing ultraviolet telescope.

(A) not only did space shuttle astronauts retrieve an orbiting satellite, it was done simultaneously

while avoiding

(B) not only was an orbiting satellite retrieved by space shuttle astronauts, but they also

simultaneously avoided

(D) space shuttle astronauts retrieved an orbiting satellite, simultaneously while avoiding

(E) space shuttle astronauts retrieved an orbiting satellite and simultaneously avoided
B simultaneously while语意重复。

想请教大家那为什么WHILE AT THE SAME TIME 就是对的呢 PREP里的题

作者: zhaoyiqing 时间: 2010-2-27 19:37
UPUP

作者: zhaoyiqing 时间: 2010-2-28 11:56
UPUP～～～～～～～～

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