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题库 / OG13-SC-89
Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile Delta and the river valleys of the Tigris and Euphrates.
that flourished at the same time as the civilizations
that had flourished at the same time as had the civilizations
that flourished at the same time those had
flourishing at the same time as those did
flourishing at the same time as those were
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A 省略 did
A：主谓结构比较，civilization that flourished at the same time as the civilizations in the Nile （flourished）
B：时态错误
C：those指代错误（先行词civilizations不存在）
DE：those指代错误；flourishing使用错误，时态不一致必须使用定语从句
没有明显的完成时标识，不要乱选完成时选项！！
B at the same time完成时错误
CDE those无指代，civilization单数