Question

【题目】 is amazing that such an old man can climb a 1,000-meter-high mountain.

A. That B. What

C. It D. Which

Answer 1

【答案】C

【解析】考查代词it。句意：这样的老人爬1000米的高山是令人惊讶的。真正的主语是主语从句“that such an old man can climb a 1,000-meter-high mountain”，it作形式主语。故选C。