Question

【题目】Humans must first of all eat, drink, have houses and clothing, _____ they can pursue politics, science, art and religion.

A. if B. before

C. whether D. how

Answer 1

【答案】B

【解析】

考查连词。句意：人类必须首先吃、喝、有房子和衣服，然后才能追求政治、科学、艺术和宗教。结合句意可知此处是before引导的时间状语从句，故选B。