Studying the fruit fly, a household nuisance but a time-honored experimental
subject, has enabled the secrets of how embryos develop to begin to be
unraveled by scientists,
A Studying the fruit fly, a household nuisance but a time-honored experi-mental subject, has enabled the secrets of how embryos develop to begin to be unraveled by scientists.
B.By the study of the fruit fly, a household nuisance and also a time-honored experimental subject, it was possible for the secrets of how embryos develo0p to begin to be unraveled by scientists.
C .By studying a household nuisance but a time-honored experimental sub-ject, the fruit fly enabled scientists to begin to unravel the secrets of how embryos develop.
D .By studying the fruit fly, a household nuisance and also a time-honored experimental subject, the secrets of how embryos develop are begin-ning to be unraveled by scientists.
E. The study of the fruit fly, a household nuisance but a time-honored exper-imental subject, has enabled scientists to begin to unravel the secrets of how embryos develop.
我选的A,答案是E，认为E中enable的发起者可以是subject或The study of the fruit fly。所以觉得E不对，求NN解释，为何选E!谢谢！作者: supercury 时间: 2011-10-6 21:54
这个解释比较牵强，因为A选项的a household nuisance but a time-honored experimental subject是做同位语的。C和D倒是存在studying的逻辑主语问题。
比较A和E，主动比被动好。作者: cherryserena 时间: 2011-10-8 06:33
