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.
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 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
我开始做也是选A 认为can不能去掉 后来想了很久 觉得好像还是应该选c
presume的用法 1) presume that...; 2)presume sth/sb to be; 3)sth be presumed to be
A的结构好像是 presume sth having done sth 或者说直接是presume sth C的结构可以看作是presume that...省略了that。虽说宾语从句that不能省,但是我在做gmat语法的时候,曾经看到过有一题是把that省了,当时我还特意问过外国的同学,that省略有没有问题。