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标题: 请教一道机语法题，谢谢 [打印本页]

作者: conquer 时间: 2005-5-6 07:25 标题: 请教一道机语法题，谢谢

The work of mathematician Roger Penrose in the early 1970s, on the geometry of what are called aperiodic tiles, turned out to describe the architecture of a previously unknown class of crystals.

(A) what are called aperiodic tiles, turned out to describe

(B) what is called aperiodic tiles, describes

(D) so-called aperiodic tiles, describe

(E) aperiodic tiles, it turned out to describe

work应该是单数啊，为什么选A

作者: apple1 时间: 2005-5-6 07:27

what 又不指代work;what由后面的tiles可以看出是个复数～are called aperiodic tiles

作者: conquer 时间: 2005-5-7 07:17

thanks a lot !!!

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