Question

【题目】You could hardly imagine how amazing the Great Wall was ________ you saw it with your eyes.

A.ifB.unlessC.so

Answer 1

【答案】B

【解析】

句意：除非你亲眼所见，否则你很难想象长城有多么神奇。

考查unless引导的条件状语从句。if如果；unless除非；so所以。分析句子可知，此处表示“除非”的含义，用于句中引导条件状语从句。故选B。