GWD 22

泠泠曲罢

The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force a rethinking of the role of comets in the delivery of organic compounds to the evolving Earth.



A.The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force

B.The spectacular disintegration of a comet last year in full view of ground- as well as space-based telescopes, provided new insights into how comets form and thus possibly forcing

C.When a comet's spectacular disintegration occurred in full view of ground- and space-based telescopes last year, it provided new insights into how comets form and thus may possibly force

D.Last year, in full view of ground- and space-based telescopes, a comet's spectacular disintegration provided new insights into how comets form and thus possibly forcing

E.Last year, in full view of ground- as well as space-based telescopes, the spectacular disintegration of a comet has provided [LU2]new insights into how comets form and may thus force

Answer A
one question: A选项中的provided 和and之后的may 不是时态不一致么？ 还是may也可以用过去式？

ldxwd19891012

额，may force 应该和form平行哦，都是working verb，可以平行。过去式不可以。

llfgohk

额，may force 应该和form平行哦，都是working verb，可以平行。过去式不可以。

-- by 会员 ldxwd19891012 (2012/4/12 9:55:40)

额 这个平行麽 可是这样感觉说不通啊 form是how the comet form啊 force a rethinking of the role of comet和how接不上的啊