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【GMATGWDSC...为什么可以用完成时?38.GWD17-Q38:AllYchromosomesinexistencetodayaredescendedfromasingleancestor’swhoisthoughttohavelivedabout140,000yearsago.A.asingleancestor’swhoisthoughttohavelivedB.asingl】
更新时间: 2025-08-28 21:12:35
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问题描述:

GMATGWDSC...为什么可以用完成时?

38.GWD17-Q38:

AllYchromosomesinexistencetodayaredescendedfromasingleancestor’swhoisthoughttohavelivedabout140,000yearsago.

A.asingleancestor’swhoisthoughttohavelived

B.asingleancestor’swhowasthoughttolive

C.asingleancestorwhomitisthoughthadlived

D.theYchromosomeofasingleancestorwhoisthoughttohavelived

E.theYchromosomeofasingleancestorwhomitwasthoughthadlived

求解答!(答案是D,为什么不能选B?)

倪景秀回答:
  hehe,好怀念~我们用排除法做题吧...ancestor'swho...指代不清,排除a.b....whowas...时态错误,既然前面说...todayaredescended...说明这东西仍旧isthoughtto...排除b.e下一个错误是...whomit...造成从句结构...
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