8月28日上午，刘虹在2015年北京田径世锦赛中以1小时27分45秒的成绩夺得女子（

阅读理解。

     In the day we work and play, at night we sleep. Our body rests while we sleep. In the morning we are

ready to work and play again. Our body grows most while we are asleep.

     Most Americans sleep an average (平均) of seven to eight hours a night. Some people need only three

or four hours of sleep a night. Children usually need more sleep. We can study our lessons better after we

have lots of rest. Boys and girls need ten hours of sleep every night when they are eight or nine years old.

After age fifty, the average sleep time goes down to 6.5 hours a night.

     Our body needs lots of air when we sleep. If we do not get enough fresh (新鲜的) air,we will feel tired

when we wake up. While in bed we must not cover our head. Our lung (肺) needs to get enough fresh air.

If we open our windows at night,we can have plenty of fresh air. Cool air is better than warm air. Boys and

girls who want to be strong must get plenty of sleep.

1. The world "cover" in the passage means ________.

A. 遮盖

B. 包含

C. 封面

D. 顶替

2. How many hours of sleep should a nine-year-old child have?

A.6.5 hours.

B. 7 hours.

C. 8 hours.

D. 10 hours.

3. What does the lung need most?

A. Fresh air.

B. Covering.

C. Warm air.

D. Exercise

在Monitoring（监视）窗口中显示的是所有已经下装到控制器中的内容，（）

一般在-200℃至+400℃的温度范围内，（）温度传感器是首选测温元件。

A.Pt100热电阻

B.标准热电偶

C.非标准热电偶

D.以上都不是

金属的物理性能包括（）、（）、（）、（）和（）等。

患者女性，28岁，右胸腋中线第4.5肋间刀刺伤1小时入院。伤口长5cm，活动性出血，鲜血外溢，病人呼吸急促、神志淡漠、面色苍白，血压63/30mmHg，麻醉后血压为O。

麻醉诱导时，哪项不适宜（）

A.快诱导

B.慢诱导

C.诱导药减量

D.开放伤口

E.快速输血