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.
Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization [size=14.0084px]that flourished at the same time as the civilizations in the Nile delta and the river valleys of Tigris and Euphrates.
a. that flourished at the same time as the civilizations
b. that had flourished at the same time as had the civilizations
c. that flourished at the same time those had
d. flourishing at the same time as those did
e. flourishing at the same time as those were
关于D 选项。 错误的点是在 those 因为单复数不一致, 不能指代civilization(s) 吗?