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.
GWD2 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. A.and whether, presuming such life forms having left fossil traces to begin with, those traces can B.B.and whether, if it is presumed that such life forms left some fossil traces to begin with, can those traces C.C.and whether, presuming such life forms left fossil traces to begin with, those traces D.D.and, presuming such life forms did leave some fossil traces to begin with, if they can E.E.and, presuming such life forms to have left fossil traces to begin with, if theyE.and, presuming such life forms to have left fossil traces to begin with, if they 答案是C，我排除后也选C，但是想问下，C中那个 presuming such life forms left fossil traces to begin with会不会放的位子不好，会被认为是其逻辑主语的those traces？
1. Critical-thinking instruction is predicted on two assumptions: that there are clearly identifiable thinking skills that students can be taught to recognize and apply appropriately, and that if students recognize and apply these skills, they will become more effective thinkers.
( and that if students recognize and apply these skills, ....) => This structure bears no coma between "that" and "if", so it’s 状语成分)
2. Scientists have identified an asteroid, 2000 BF19, that is about half a mile wide and that, if it were to strike Earth, could do tremendous damage to part of the planet but would probably not cause planetwide destruction.
(and that, if it were to strike Earth, ... .) =>This structure bears a coma between "that" and "if", so it’s 插入语)
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发表于 2009-12-1 22:49:26
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