Question

【题目】—We’ll visit the Summer Palace________there is a heavy rain tomorrow．

—OK！Boating on the lake must be great fun．

A．unless

B．since

C．as soon as

D．if

Answer 1

【答案】A

【解析】句意：“如果明天没有大雨的话，我们就参观颐和园。”“好吧。湖上划船一定很有趣。”由句意可以得知答案。