问题
填空题
用水壶烧水,水开时常把壶盖顶起,这是气体膨胀对壶盖________,气体本身的_________减小,转化为壶盖的_________能。
答案
做功,内能,机械
用水壶烧水,水开时常把壶盖顶起,这是气体膨胀对壶盖________,气体本身的_________减小,转化为壶盖的_________能。
做功,内能,机械
阅读理解。 | ||
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1. How many tables are there in the dining hall? _____________________________________________ 2. What’s Tony and Linda’s favourite Chinese food? _____________________________________________ | ||
3. There are _____ in the dining hall. | ||
A. some tables and some students B. some tables and some teachers C. some tables and some pictures D. some students and some teachers | ||
4.选择适当的词填在①处: | ||
A. and B. but C. in D. so | ||
5. 在②处的空白处用not like的适当形式填空: _______________________________________ |