Question

【题目】You will be amazed to discover that what confused you at first makes sense _____further readings.

A. to B. of

C. upon D. before

Answer 1

【答案】C

【解析】考查介词。句意：当你更进一步阅读的时候，你会惊奇地发现，起初让你困惑的会言之有理。固定搭配：on/ｕｐｏｎ doing sth.一---就；当---时候。根据句意可知选C。