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OG17-SC687求助。。。

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发表于 2017-4-21 19:10:52 | 显示全部楼层 |阅读模式
选A对了,可是E选项为啥awkward and unclear...., appear 的搭配不对吗,还有which 能否这么用呢

687. Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun's poles or equator.
(A)  are visible as dark spots on the  surface of the Sun but have never been sighted on
(B)  are visible as dark spots that never have been sighted on the surface of the Sun
(C)  appear on the surface of the Sun as dark spots although never sighted at
(D)  appear as dark spots on the surface of the Sun, although never having been sighted at
(E)  appear as dark spots on the Sun's surface, which have never been sighted on

谢谢大牛们!
发表于 2017-4-21 22:25:59 | 显示全部楼层
which引导到的从句只能修饰紧贴在前的noun或noun prep noun形式中前面的noun,这句带入的话要么是dark sports要么是surface所以不对。并且原句but前后这种转折关系在e中就消失了
 楼主| 发表于 2017-4-29 11:20:09 | 显示全部楼层
white040813c 发表于 2017-4-21 22:25
which引导到的从句只能修饰紧贴在前的noun或noun prep noun形式中前面的noun,这句带入的话要么是dark spor ...

谢谢你啊
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