问题
选择题
胶体分散系与其它分散系的本质差别是( )
A.分散质粒子大小
B.是否有丁达尔现象
C.是否稳定
D.分散质粒子是否带电
答案
答案:A
题目分析:胶体分散系与其它分散系的本质差别是分散质粒子大小,答案选A。
点评:该题是基础性试题的考查,难度不大。该题的关键是记住三种分散系的含义以及本质的区别,学生不难得分。
胶体分散系与其它分散系的本质差别是( )
A.分散质粒子大小
B.是否有丁达尔现象
C.是否稳定
D.分散质粒子是否带电
答案:A
题目分析:胶体分散系与其它分散系的本质差别是分散质粒子大小,答案选A。
点评:该题是基础性试题的考查,难度不大。该题的关键是记住三种分散系的含义以及本质的区别,学生不难得分。
口语运用(每空1分,共5分) 阅读下面对话,从方框内7个选项中选择5个恰当的句子完成此对话,并将其番号填入答题卷相对应的横线上。
B: Of course! Please. A:小题1:________ B: Yes, I do. I like it very much. A:小题2:___________ B: Not really, but I can make enough money to support my family. A: Who do you think are happier, the rich or the poor? B:小题3:_________ I don’t think money can bring people lasting happiness. A: Which do you think is the most important, health, money or work? B:小题4:________ Without a healthy body, you can do nothing. A: I agree. Health must come first. Thank you for answering my questions. B:小题5:________ |