Question

【题目】Parents should take seriously their children’s requests for sunglasses ______ eye protection is necessary in sunny weather.

A. because of B. though

C. because D. unless

Answer 1

【答案】C

【解析】考查状语从句中连词的用法。句意：太阳镜可保护眼睛，这是常识，所以不选D项。可知此处是原因状语从句，故选C。