搜题请搜索小程序“爱下问搜题”
问题 选择题

下列物质中属于离子化合物的是

A．KCl

B．Ba(OH)2

C．H2O

D．NH4Cl

答案

ABD

含有离子键的化合物是离子化合物，水中只有极性键，属于共价化合物。答案是ABD。

完形填空

根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意思连贯、完整。

A: Do you agree that computers have been very important in people’s lives these days?

B: 小题1:_____________. And many people think they will be used even more widely in the future.

A: 小题2: _______ _____?

B: For looking up information, reading books and playing games.

A: 小题3: ____________?        

B: Yes, I do. It’s easy and convenient to shop online. I can save a lot of time by doing that.

A: That’s true. However, sometimes it isn’t safe to buy things online.

B: So we should be careful to shop  online. 小题4:___ ________?

A: I like watching movies and chatting online.

B: 小题5: ______________.

A: Sure. I have about 10 e-pals(网友) who are from different countries.

B: That sounds interesting.
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单项选择题

监理工程师不得在以下哪些单位兼职?

Ⅰ．工程设计Ⅱ．工程施工Ⅲ．材料供应

Ⅳ．政府机构Ⅴ．科学研究Ⅵ1．设备厂家

A.Ⅰ、Ⅱ、Ⅲ、Ⅳ

B.Ⅱ、Ⅲ、Ⅳ、Ⅴ

C.Ⅱ、Ⅲ、Ⅳ、Ⅵ

D.Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅵ
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