Question

【题目】We'll have a picnic in the park this Sunday ________ it rains or it's very cold.

A.sinceB.ifC.unlessD.until

Answer 1

【答案】C

【解析】

考查从属连词。句意：除非下雨或天很冷，我们将在本周日去公园野餐。从句子之间的逻辑关系判断，此处应为否定条件句，相当于if...not，故排除if，而选unless。A项since表因果关系；D项until只能引导时间状语从句，故排除。故选C。