2. 外语
  3. All gases and most liquids and solids expand when ______ .

All gases and most liquids and solids expand when ______ .

admin2010-05-25  49
问题 All gases and most liquids and solids expand when ______ .
选项 A、heated
B、heating
C、being heating
D、heat
答案A
解析 非谓语动词题。在时间、条件、让步等状语从句中，当从句主语和主句主语一致时，可将从句的主语和be的变化形式省略，本句的完整形式为"All gases and most liquids and solids expand when they are heated."省略they are，故选A
转载请注明原文地址:https://kaotiyun.com/show/5Z2K777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)