问题
选择题
雾属于下列分散系中的（ ）
A．溶液
B．悬浊液
C．乳浊液
D．胶体
答案
根据教材知识可知：雾属于胶体分散系．
故选D．
搜题请搜索小程序“爱下问搜题”
雾属于下列分散系中的（ ）
A．溶液
B．悬浊液
C．乳浊液
D．胶体
根据教材知识可知：雾属于胶体分散系．
故选D．
| 根据对话内容，选择恰当的句子补全下列对话。 | |
| (H for Henry; J for Janet) H: Hi, Janet, Would you like to help save the environment? J: I don't know. 1______ H: Well, first, you can start by turning off the lights. J: Yes. That's easy. Sometimes I turn on the lights without thinking. 2______ H: Second, you can ride a bicycle. 3______ J: That will save money, too. What else? H: Third, try to recycle paper. J: Mm. We get a lot of paper at home. Good idea. H: The fourth idea is turning off the shower when you're not using it. J: You mean, when I have shampoo (洗发剂) in my hair? H: Yes. 4______. Every minute helps. And fifth, take a bag when you go shopping. Don't use plastic bags (塑料袋). J: OK. 5______. I'll tell them.
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