◎ 题干

Storms most commonly occur_______a warm air mass and a cold air mass touch each other.
A.in case B.where C.in which D.unless
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Storms most commonly occur_______a warm air mass and a cold air mass touch each other.A.in case B.where C.in which D.unless…”主要考查了你对  【状语从句】【限制性定语从句】【主语从句】【同位语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。