When I try to understand______that prevents so many Americans from being as happ

游客2025-03-20 29

问题 When I try to understand______that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.

选项 A、why it does
B、what it does
C、what it is
D、why it is

答案 C

解析此题的关键是分析出，该句是一个it is…that…强调句结构的问句形式，"是什么阻碍了如此多的美国人像所期待的那样幸福……"。如果变成陈述句就是：It is…thatprevents Americans from…。

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