问题
选择题
下列叙述正确的是 ( )
A．250C 101KPa条件下，32gO2占有的体积约为22.4L
B．标准状况下，11.2L氮气和氖气的混合气体所含的原子数为阿伏加德罗
常数个
C．同温同压下两种气体，只要分
子数相同，所占体积相同，质量也相同
D．22g二氧化碳与标准状况下11.2LHCl含有相同的分子数
答案
答案：D
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下列叙述正确的是 ( )
A．250C 101KPa条件下，32gO2占有的体积约为22.4L
B．标准状况下，11.2L氮气和氖气的混合气体所含的原子数为阿伏加德罗常数个
C．同温同压下两种气体，只要分子数相同，所占体积相同，质量也相同
D．22g二氧化碳与标准状况下11.2LHCl含有相同的分子数
答案：D
| 阅读理解 | |||
I have three pen pals from different countries. They are Rose, Ken and Wang Yi. Now, let meintroduce them to you. Here is their information(信息):
| |||
| 1. Who is from Canada? | |||
| A. No one. B. Rose. C. Ken. D. Wang Yi. | |||
| 2. Who can speak English? | |||
| A. Rose. B. Ken. C. Rose and Ken. D. Wang Yi. | |||
| 3. How many children are there in Ken's family? | |||
| A. One. B. Two. C. Three. D. Four. | |||
| 4. Who would like to talk about the movie Hero《英雄》) with you? | |||
| A. Wang Yi. B. Ken. C. Rose. D. Wang Yi and Rose. | |||
| 5. If' you want to learn some French, you can keep the E-mail address __________. | |||
A. rose@ yahoo. com |