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标题: [求助]GWD-2-34 SC题，没讨论过 [打印本页]

作者: 吉吉狗 时间: 2006-9-2 09:16
标题: [求助]GWD-2-34 SC题，没讨论过

Q34:

NASA’s methodical approach to the exploration of Mars has not yet answered the questions of whether biological life forms ever emerged on Mars and whether, presuming such life forms having left fossil traces to begin with, those traces can
still exist in some moist recesses of the cold and arid planet.

and whether, presuming such life forms having left fossil traces to begin with, those traces can
and whether, if it is presumed that such life forms left some fossil traces to begin with, can those traces
and whether, presuming such life forms left fossil traces to begin with, those traces
and, presuming such life forms did leave some fossil traces to begin with, if they can
and, presuming such life forms to have left fossil traces to begin with, if they

答案是A, C为什么不对？是不是presuming后面的时态left不对？

作者: chnp 时间: 2006-9-3 17:20
一种说法是C的presuming后要加that

作者: becharming 时间: 2006-9-3 17:30
并且，从句子的意思看，can是必要的。

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