题目内容
10． you smile at others，they will smile back．（ ）| A． | Before | B． | When | C． | Until | D． | Though |
分析 当你对别人微笑的时候，他们也会向你报以微笑．
解答 答案：B；
根据语境以及上下文，本题考查的是连词的用法．根据设空处前后句可以推测句意是"当你对别人微笑的时候，他们也会向你报以微笑．"表示"当…的时候"用when，故选B．
点评 比较和分析选项中连词的不同含义及其用法是解答该题的关键；还要根据句中信息正确推测该句句意，进而作出解答．
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