04---37求解

wretdgdh

Among the most complex cryslals are that of silicon dioxide, which has seven different structures at varjous temperatures and pressures, the most common being quartz.

哪位高手分析下这个句子啊？尤其对前半句......那个that 怎改？

elites

我觉得应该改为those，因为cryslals是复数。

among开头为倒装句，译为在。。。之中。

wretdgdh

thanks   a    lot  @!!!!