问题 问答题 计算题

如图所示,已知拉线与地面的夹角∠B为60°,拉线挂线点距地面H为12m,拉线盘埋深M为2.2m,试计算出拉线长度及拉线坑中心距电杆中心水平距离。

答案

参考答案:

拉线长度为13.86m,拉线坑中心距电杆中心水平距离为8.198m。

解析:①拉线坑中心距电杆中心水平距离L=(12+2.2)tg30°=8.198(m)②拉线长度LAB=13.86(m)

完形填空

If you are worried about things and are under a lot of stress at work or school, then you are probably not sleeping well. Worry can keep you awake, tossing and turning in bed until the early hours of the morning when you eventually fall asleep. When you wake up, you don’t feel refreshed(精神振作), but tired and worn out and unable to face a new day.

Dr. Henry Winkle, in a recent newspaper article entitled Stress and Sleep, indicates(暗示、表明) that                     . Dr. Winkle says, “The more we worry, the less we sleep, the more we are unable to deal with stress. If we can find a way to get a good night’s sleep,” he adds, “we can often find the energy to deal with what’s worrying us.”

So, what is a good night’s sleep? Research shows that the amount of sleep which people need in order to keep healthy varies a lot. Seven hours is about the average amount, though strangely enough, sleeping longer often gives you a headache instead of making you feel more refreshed.

Dr. Winkle believes that preparing for sleeping is important. People who work late should try to give themselves a short break and do something restful before going to bed. This could be watching TV or listening to music. Doing some exercise earlier in the day should help you to feel physically as well as mentally tired. A bedtime drink can also help, but coffee or tea should be avoided as they contain caffeine and will keep you awake. “When you put the light out,” Dr. Winkle says, “concentrate on relaxing your muscles, working slowly up from your feet, and you’ll be asleep before you know it.”

小题1:What is the best title of the passage? (Please answer within 10 words)   

________________________________________________________________________                                                                     

小题2:Which sentence in the passage can be replaced by the following one?

People shouldn’t go to sleep immediately but should take a break after working late in the night.

_____________________________________________________________________

小题3:Please fill in the blank in the second paragraph with proper words or phrases to complete the sentence. (Please answer within 10 words)

___________________________________________________________________________                                                                  

小题4:Someone says that the longer you sleep, the better you feel. Try to find some arguments from the passage against the idea. (Please answer within 30 words)                                                

___________________________________________________________________________                                                                  

小题5:Translate the underlined sentence in the first paragraph into Chinese.   

                                                                       

 

问答题 简答题