《愚公移山》中将愚公率领子孙们决心挖山不止的壮举与智叟_____________

不能用影响化学反应速率的条件来解释的是[ ]

A．镁和锌分别与相同浓度的盐酸反应，镁产生H₂的速率快

B．H₂S在空气中燃烧呈淡蓝色火焰，在纯氧气中燃烧呈蓝紫色火焰

C．用加热的方法将水中的氧气、氮气逐出

D．面粉加工厂内充满粉尘，遇火焰会发生爆炸

阅读理解。

Tim: Excuse me, Sonia. Is this your backpack?

Sonia: No, it isn't.My backpack is here. You can ask that girl. I think (认为) it's hers.

Tim: Ok. Excuse me. Is this your backpack?

Jane: Oh, yes.

Tim: Here you are.

Jane: Thank you very much.

Tim: That's all right. ( You are welcome.) Oh, what's your name, please.

Jane: My name is Jane.

Tim: Are you in Class Two?

Jane: No, I'm in Class Eight. And what's your name?

Tim: Ah, it's a secret (秘密). Good bye.

Jane: Bye.

1. This conversation (对话) is _____. [ ]

A. in a car

B. in Tim's house

C. at school

D. at Jane's home

2. That backpack is _____. [ ]

A. That boy's

B. Tim's

C. Jane's

D. Sonia's

3. Jane is a _____.[ ]

A. teacher

B. boy

C. Tim's friend

D. student

4. Jane _____ in Class Two. [ ]

A. and Tim are

B. and Sonia are

C. is

D. is not

5. Jane _____. [ ]

A. doesn't know (认识) Tim's name

B. is Sonia friend's

C. knows Tim

D. isn't in Class Eight

什么是视听资料？

当需对检测结果作解释时，对含抽样结果在内的检测报告，除应列出的要求外，还应包括下列内容：抽样日期；抽取的物质、材料或产品的清晰标识(适当时，包括制造者的名称、标示的型号或类型和相应的系列号)；抽样地点，包括任何简图、草图或照片；所用抽样计划和程序的说明；抽样过程中可能影响检测结果解释的环境条件的详细信息；与抽样方法或程序有关的标准或规范，以及对这些规范的偏离、增添或删节。( )

高温天气驾驶货车行驶感觉疲劳时，应该（） 

A.坚持驾驶

B.选择正确方法缓解驾驶疲劳

C.在安全地点停车休息

D.加快车速