求助GWD 2-34

kingsonosgnik

TT-GWD 2-34.

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.



A.and whether, presuming such life forms having left fossil traces to begin with, those traces can

B.and whether, if it is presumed that such life forms left some fossil traces to begin with, can those traces

C.and whether, presuming such life forms left fossil traces to begin with, those traces 可以少that?

D.and, presuming such life forms did leave some fossil traces to begin with, if they can

E.and, presuming such life forms to have left fossil traces to begin with, if they



请教一下c 的结构？我觉得c也不对，因为 presuming such life forms left fossil traces to begin with 中，preseming后面少了that。。。。。

0o小猪o0

presuming是伴随 不是一定要加that 的吧 宾语后的that才是不可以省略的

kingsonosgnik

presuming是伴随 不是一定要加that 的吧 宾语后的that才是不可以省略的

-- by 会员 0o小猪o0 (2010/8/29 1:27:59)

可是我觉得伴随的那个句子是完整的句子呀，left 是such life form发出的，是吗？ 相当于宾语从句呀？