Is sleeping longer during weekends good for y...

Is sleeping longer during weekends good for you? Scientists 1. (mention) that this habit is bad for your health and can make you gain weight.

According to sleep experts (专家), sleeping longer during weekends is 2. (harm) to you because you might feel like you're catching up on sleep. But if you still sleep poorly during weekdays, you will feel 3. (sleep) and hungry more often. You might have no energy to focus 4. your work. Besides, you might eat more and gain some weight 5. (great).

Also, sleeping more during weekends can change 6. (you) biological clock (生物钟). If you get up l7. on the weekend, you might have breakfast, lunch and dinner later than usual. Eating later in the day also causes you to gain weight. How can you sleep better?

•Keeping your 8. (foot) warm can help you sleep. Put on 9. pair of socks before going to bed. This can help you fall asleep faster.

•Exercising regularly can help you sleep 10. (good).

•Keep your room as dark as possible.

九年级英语语法填空中等难度题查看答案及解析

Hi, I'm Zhang Li from Yucai Middle School. I can't sleep well and I always wake up several times during the night. In order to help me sleep well, I've collected some good ways. Here are some suggestions.

1.Go to bed at the same time every night. Try not to break this habit on weekends. Wake up at the same time every morning. If you are getting enough sleep, you will wake up naturally.

2.Don't play on the computer for more than half an hour before you sleep. Studies show that it is bad for the quality of your sleep. Reading a book or listening to light music is good for sleep.

3.A clean environment is necessary. Make sure that you have turned off the lights in your room before you sleep, and that the temperature is comfortable.

4.Exercising will help you to go to sleep more easily. Walk for 45 minutes every day and you will sleep better at night. But don't do it just before you go to bed.

5.Use hot water to wash your feet before you sleep every night. Washing feet for about twenty minutes every time helps you fall into a deep sleep. Keep on doing it, you can sleep well.

A.Have a nice environment

B.Wash feet with hot water

C.Don't get up early

D.Have regular sleep habits

E.Take exercise properly

F.Tum off your computer

九年级英语信息匹配中等难度题查看答案及解析

Wake up, boys and girls! Put up your hand if you try to repair your tired body by sleeping in(睡懒觉)on weekends. A new study says the habit might not be a good idea for your health.

The ten-day study came out in the magazine Current Biology. Volunteers were divided into three groups. The first group enjoyed nine hours' sleep each night. The second group was allowed to sleep only five hours each night. The third group was given five hours' sleep Monday through Friday.1.But they were put back on the short sleep schedule the next Monday.

Both the second and third groups ate more snacks at night and put on weight. They also saw a decrease (减少) in insulin sensitivity (胰岛素敏感性), a warning sign for diabetes (糖尿病). Researchers have long known a tack (缺乏) of sleep can increase health risks.2.

"Even though people in the third group slept as much as they could on the weekend, it was not enough," said Dr Kenneth Wright, who led the study. "When they went back to the short sleep schedule the next week, their body failed to control blood sugar. 3.

So what should we do if sleeping in over the weekend is not a good choice? 4. Cut out the "sleep stealers" such as watching television shows or spending time on computers or mobile phones. Always remember. Getting enough sleep is as important as having good caring habits or doing exercise regularly.

A.That was partly because their biological clock (生物钟) had been changed.

B.People can repair their tired body by sleeping in on weekends.

C.But it was surprising that the third group had been worse than the second one.

D.Dr Wright gave advice in two words: sleep longer.

E.And then they were allowed to sleep as much as they liked over a weekend.

九年级英语补全短文5选4困难题查看答案及解析

We often find that weekends and holidays feel so short while classes and work feel so long. Actually, though, we know that this is not true. But we still wonder where that strange feeling comes from. In fact, this is one of the ways that we’re tricked by time, according to the website All That Is Interesting. The website lists several wrong impressions we often have about time. Let’s have a look.

First of all, emotions affect our time-keeping abilities. Negative emotions, especially anxiety and boredom, make time seem longer because they make us concentrate more on the passage of time. However, when we are enjoying ourselves, we pay more attention to what we are doing and are likely to lose feeling of time.

Here is another example. In 2007, a group of scientists carried out a test. In the test, people fell 50 meters into a safety net and were then asked about their experience. Although the experience took shorter than 3 seconds, the people thought it was much longer than it actually was. This is because of the way our bodies reply to danger, according to the scientists. Our bodies produce a chemical called adrenaline (肾上腺素) when we are faced with danger. It allows us to concentrate better so that we can stay alive. As a result, we are able to remember far more details over a short period of time, which makes it seem like time is going more slowly.

Another situation when we make mistakes about time is when we take afternoon naps (午觉). Have you ever had trouble telling what time it is after a long nap? That’s because the best amount of time for a nap is 20 minutes. After 20 minutes, you enter a new stage of sleep called slow-wave sleep. If you wake up mid-way in this stage, it will take a while before you can correctly feel time again.

Yes, time can be mysterious and there is no way to control it. So, perhaps the best thing to do is to make good use of every minute.

1.According to the passage, what possibly makes people feel so long?

A.weekends and holidays B.weekends and work

C.classes and work D.holidays and work

2.According to the passage, what will NOT happen when we are faced with danger?

A.Our bodies will produce a chemical called adrenaline.

B.We are able to feel that time seems to go more slowly.

C.Adrenaline will make us concentrate better to stay alive.

D.We will forget far more details over a short period of time.

3.Which of the following statements is NOT true according to the passage?

A.Negative emotions, especially anxiety and boredom, make time seem longer because they make us concentrate more on the passage of time.

B.When we are enjoying ourselves, we pay more attention to what we are doing and we are able to feel like time is going more slowly.

C.If we wake up mid-way after a long nap, it will take a while before we can correctly tell time again.

D.Time can be mysterious and there is no way to control it. So, perhaps the best thing to do is to make good use of every minute.

九年级英语阅读单选困难题查看答案及解析

A strange thing happens to nearly everybody. At night, people turn off the lights, pull up the covers and close their eyes. Six or seven sleeping hours later, they wake up again. Strange, isn't it?

Sleep ①puzzles science. Scientists and doctors would rather talk about why one can't fall asleep. They are not sure what causes sleep. The best conditions for sleep are good health and meal neither too big nor too small. No worries and a comfortable place are important, too.

Strange things happen during sleep. For example, you move often. You would feel tired if you didn't. You also dream. Part of your brain is still awake when you sleep. Dreaming happens when the memory and imagination in parts of your brain are still awake. Experiments have shown most of us dream in color. Bad dreams may be caused by stomachache. Don't worry if you dream. Some great stories and poems were begun while their writers slept.

1.根据短文内容，猜测①处划线单词puzzle的意思。将字母代号填写在答题卡上。

A.困惑 B.谜语 C.解释

2.列举出文章中提到的好睡眠需要的条件。

① good health　 ②___________　 ③ ___________　 ④ a comfortable place

3.回答问题。Why do people dream while they are sleeping?

_______________________________

4.从文章中找出与Stomachache may cause bad dreams.意思相同或相近的句子。

_______________________________

5.根据文章内容，给本文拟一个合适的标题。

_______________________________

九年级英语多任务混合问题中等难度题查看答案及解析

What subject do you worry about the most at school? Many students worry about math. Some students can't sleep well the day before a math exam. Others may feel very nervous during the exam itself. But there might be a way to make the subject less stressful (压力大的).

"For people who are worried about math, posture (姿势) makes a big difference," Erik Peper from San Francisco State University told The Daily Mail. That's right—sitting up straight can help you do better on math exams.

Scientists tested 125 college students. They asked them to do a simple math exam while sitting in a slumped-over (趴倒的) posture, or sitting up straight. After the test, 56 percent of students said the exam was easier to do if they were sitting up straight.

"Slumping over is a defensive (戒备的) posture. It can bring about bad memories in the body and brain. This can stop you from thinking clearly," Peper said.

Students who were not nervous about taking the math exam did not necessarily benefit from better posture. But they did find that doing math while slumped over was more difficult, Science Daily reported.

Good posture isn't just helpful for taking math exams. Sportspeople, musicians and public speakers can all benefit from better posture. When you feel stressed out, you can also try to sit up straight or stand tall. It can help you feel more certain and focus better.

1.What posture can make people feel less stressed during math exams?

A.Sitting up straight. B.Hanging your head. C.Lying on your back. D.Raising one hand.

2.What did the scientists ask the college students to do during the test?

A.To do sit-ups. B.To count numbers. C.To think carefully. D.To sit in different postures.

3.The underlined word "benefit" in the passage means"________".

A.get advantages B.lose things C.get hurt D.fall asleep

4.The fourth paragraph is written to explain________.

A.why slumping over makes exams harder to do B.why slumping over is bad for one's health

C.why some people slump over during exams D.why people are nervous during math exams

5.Which of the following is the best title for the passage?

A.Slump over to Take Exams B.Sit up to Do Math

C.Better Posture for Nervous Students D.Good Advice for Better Exams

九年级英语阅读单选中等难度题查看答案及解析

A strange thing happens to nearly everybody at night. They turn off the lights, pull up the covers and______ their eyes. Several hours later, they ______ again. Strange, isn’t it?

Sleep puzzles science. Scientists and doctors would rather talk about why one can’t fall asleep. They are not so sure ______ causes sleep.The best conditions for sleep are good health and meal which is ______ too big nor too small. No worries and a comfortable place can help you fall asleep______.They don’t think it’s good for two people to sleep in one bed.

Strange things happen during sleep. For example, you move often. You would feel ______if you didn’t. You also dream. Parts of your brain are still ______when you dream. Dreaming happens when the ______and imagination parts of your brain are still awake. In your dream, you can see things that happened _______or people you met before and you might even see things that never happen or people you never meet in your real life. Many scientists say ______ have shown that most of us dream in colour. Bad dreams may be caused by a stomachache. Don’t worry if you dream. Some great stories and poems were begun while the writers slept.

1.A.close B.open C.opened D.closed

2.A.get on B.wake up C.fall asleep D.go to bed

3.A.who B.whom C.what D.which

4.A.both B.none C.either D.neither

5.A.slowly B.heavily C.hardly D.easily

6.A.sad B.tired C.angry D.excited

7.A.away B.asleep C.awake D.afraid

8.A.memory B.education C.attention D.knowledge

9.A.on holiday B.in the past C.in the future D.at the moment

10.A.pictures B.newspaper C.experiments D.suggestions

九年级英语完型填空中等难度题查看答案及解析

听下面一段对话，回答下列各小题。

1.Why does David study seep?

A.Because sleep is important. B.Because sleep is a hot topic. C.Because people can't sleep well.

2.How long does a police officer often work?

A.For ten hours. B.For eleven hours. C.For twelve hours.

3.How does David study sleep?

A.By asking questions. B.By reading articles. C.By doing the experiments (实验).

4.What can we know from the conversation?

A.People can always sleep well after tiring work. B.Blue light may be good for tired people at work.

C.Scientists study sleep by using different music.

九年级英语听长对话回答问题中等难度题查看答案及解析

Do you like exercising in the sun? How much sunlight do you get every day? How much time do you spend in the _______ ? As we all know，enough sunlight is good for our health. It gives us strong bones（骨骼）and good eyesight. It makes us happy and sleep better. Now scientists find out that it can even make you _______ .

Scientists did tests on mice. They give mice lots of sunlight. After that，the mice _______ a special thing named glutamic acid（谷氨酸）in their bodies. Glutamic acid does many things for our body. It can improve some of our abilities such as learning and remembering things.

It is OK to enjoy some sunlight for about an hour every day. But you should be _______ because it is summer now. The sun is very strong around noon. Keep yourself away from the sun around the noon, or it may _______ your skin（皮肤）. It is best to enjoy sunlight in the morning or before sunset.

Why not go out and enjoy the _______ with your family or your best friends? I'm sure you can be smarter soon.

1.A.moon B.sun C.night

2.A.smarter B.taller C.thinner

3.A.invent B.find C.produce

4.A.careful B.serious C.clever

5.A.shine B.burn C.dry

6.A.time B.air C.sunlight

九年级英语完型填空中等难度题查看答案及解析

Enough sleep is good for health. If you 　　　 for your favorite games, you will be exhausted the next day.

A. stay up　　　　　　　　　　 B. show up　　　　　　　　　 C. give up

九年级英语单项填空中等难度题查看答案及解析