,thismathproblemseemedquitesimpletome,butwhenItri...
来源：语文精选馆 1.8W
问题详情：
, this math problem seemed quite simple to me, but when I tried to work it out, I just couldn’t.
There are always things like this, I think.
A. On its own B. On one hand C. In my opinion D. At first sight
【回答】
D知识点：词组 短语
题型：选择题
