Want a good night's sleep? Then turn off your computer, cell phone or PSP two hours before you go to bed.
These things have bright lights. When our eyes see bright lights just before sleep, our sleep patterns (模式) change, a study has found.
Our body clock starts shutting us down for bed at 9 or 10 pm. But bright lights make our minds think that it is still daytime. That wakes us up and leaves us sleepless, experts say.
But if you read a paper book before sleeping, you won't have this problem. This is because light from a bedside lamp (台灯) does not go straight into our eyes.
Also, if you are watching a television from across the bedroom, you won't have problems falling asleep. The TV sends light to us from a distance, so the light won't be as strong.
1.The writer tells us to turn off the computer________before bed time.
A. half an hour B. an hour C. two hours D. three hours
2.Which of the following may make us sleepless?
A. Reading a newspaper. B. Talking on QQ.
C. Reading a book. D. Watching TV.
3.Why can't we sleep well if we use a computer before bed time?
A. We think it is daytime if we leave computers on.
B. We feel too excited to sleep after using computers.
C. Lights from computers are brighter than other lights.
D. Lights from computers can change our sleep patterns.
七年级英语阅读理解困难题
Want a good night's sleep? Then turn off your computer, cell phone or PSP two hours before you go to bed.
These things have bright lights. When our eyes see bright lights just before sleep, our sleep patterns (模式) change, a study has found.
Our body clock starts shutting us down for bed at 9 or 10 pm. But bright lights make our minds think that it is still daytime. That wakes us up and leaves us sleepless, experts say.
But if you read a paper book before sleeping, you won't have this problem. This is because light from a bedside lamp (台灯) does not go straight into our eyes.
Also, if you are watching a television from across the bedroom, you won't have problems falling asleep. The TV sends light to us from a distance, so the light won't be as strong.
1.The writer tells us to turn off the computer________before bed time.
A. half an hour B. an hour C. two hours D. three hours
2.Which of the following may make us sleepless?
A. Reading a newspaper. B. Talking on QQ.
C. Reading a book. D. Watching TV.
3.Why can't we sleep well if we use a computer before bed time?
A. We think it is daytime if we leave computers on.
B. We feel too excited to sleep after using computers.
C. Lights from computers are brighter than other lights.
D. Lights from computers can change our sleep patterns.
七年级英语阅读理解困难题查看答案及解析
Lily Chen, the TV is too noisy. Your son is sleeping. Please __________
A. turn on it B. turn off it C. turn it on D. turn it off
七年级英语单选题中等难度题查看答案及解析
First, ____ the printer____the computer. Then you can print your document.
A.turn; on B.connect; to
C.turn off D.connect; for
七年级英语单项填空中等难度题查看答案及解析
Before you turn off your computer, you must ________ the document.
A. keep B. hold C. stay D. save
七年级英语单选题中等难度题查看答案及解析
—It's ten o'clock now.I want to go to ________.
—Good night，Jane.
A. school B. work C. sleep D. swim
七年级英语单选题中等难度题查看答案及解析
—Mom, I found father sleeping at his desk last night. He must be very tired then.
－Oh sweetie, you were the one who put the blanket ______him.
A.out B.over C.above D.across
七年级英语单选题简单题查看答案及解析
Don’t forget off the computer when you leave the room, Jim.
A. turn B. turns
C. turning D. to turn
七年级英语单项填空中等难度题查看答案及解析
We like to the fireworks at night.
A. let off B. take off
C. get off D. turn off
七年级英语单项填空中等难度题查看答案及解析
I want to watch TV. Please ________.
A. turn it on B. turn on it C. turn it off D. turn off it
七年级英语单选题中等难度题查看答案及解析
---Please turn off the TV. The baby _______.
---OK, I’ll go out for a walk.
A. sleeps B. Slept
C. is sleeping D. was sleeping
七年级英语单项填空简单题查看答案及解析