More have been learned since 1945 about chemical changes in the body than in all

游客2025-03-12 41

问题 More have been learned since 1945 about chemical changes in the body than in all human history before ______ time.

选项 A、this
B、the
C、the past
D、that

答案 D

解析本题为单词用法题。答案为D)，因为that time通常前指，指代前面的时间1945年，而this通常后指。

转载请注明原文地址:https://tihaiku.com/zcyy/3993772.html

相关试题推荐

随机试题

最新回复(0)

Thechemicalfactorywasdemolished______protectingtheenvironment.A、inspite