问题
选择题
下列物质发生变化时，所克服的粒子间相互作用属于同种类型的是[ ]
A．液溴和苯分别受热变为气体
B．干冰和氯化铵分别受热变为气体
C．二氧化硅和铁分别受热熔化
D．食盐和葡萄糖分别溶解在水中
答案
答案：A
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下列物质发生变化时，所克服的粒子间相互作用属于同种类型的是[ ]
A．液溴和苯分别受热变为气体
B．干冰和氯化铵分别受热变为气体
C．二氧化硅和铁分别受热熔化
D．食盐和葡萄糖分别溶解在水中
答案：A
| 补全对话。 | |
| Li: Hi, Wang Hai! It's a long time since we met last. 1 Wang: I've been to Kunming with my friends. Li: 2 Wang: Yes, of course. And we saw many kinds of flowersthere. 3 Li: Did you meet any foreign visitors? Wang: Yes, a lot. And I talked with some of them. Li: 4 Wang: They said we were very friendly. Li: 5 Wang: The delicious food and the places of interest.
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| 1. _____ 2. _____ 3. _____ 4. _____ 5. _____ |