下列说法正确的是 A．用浓溴水可以鉴别苯、甲苯、环己烷 B．所有的蛋白质、塑料、

消毒后医疗用器，不得检出____。

根据下列句子所给的汉语提示，写出句子空缺处单词的正确形式

1. It's a good __________(机会) for me to travel abroad.

2. Jane didn't go to bed __________(直到) her father came back home.

3. I'm looking for my key ring. I can't find it __________(任何地方).

4. Don't __________(哭) over the spilt milk.

5. Mr Smith __________(居住) and works in Beijing.

6. We don't have __________(足够的) food and vegetables for dinner, so you'd better buy some more.

7. Now many farmers in China are __________(富裕) than ever.

8. If you feel bad, you'll have to take more __________(休息).

9. Many precious animals are in __________(危险). We must take actions to protect them.

10. We should fight __________(反对) the unfair treatment.

下图为“亚洲与欧洲分界示意图”。读图完成下题。

在亚欧两大洲分界线附近，由北向南依次出现的自然带大致是[ ]

A．苔原带—亚寒带针叶林带—温带草原带—温带荒漠带

B．冰原带—亚寒带针叶林带—温带落叶阔叶林带—温带草原带

C．苔原带—亚寒带针叶林带—温带落叶阔叶林带—亚热带常绿硬叶林带

D．冰原带—亚寒带针叶林带—温带落叶阔叶林带—亚热带常绿阔叶林带

泡沫灭火系统管道与其他管道成排布置间距的允许偏差不大于（）。

A、5mm

B、10mm

C、15mm

D、20mm

自动安平水准仪的使用与一般水准仪的不同之处为不需要（）这项操作。

A.“安置”

B.“粗平”

C.“瞄准”

D.“精平”