Question

【题目】______it is often cold in the mountains，you need to wear warm clothes．
A.Though
B.Unless
C.As
D.Until

Answer 1

【答案】C
【解析】考查连词辨析．句意：由于在山里常常很冷，你需要穿暖和的衣服．Though虽然；Unless除非；As由于；Until直到…时．根据题干______it is often cold in the mountains，you need to wear warm clothes．可知as这里引导的是原因状语从句，即由于在山里常常很冷，你需要穿暖和的衣服．故选C．