(A) No one knows why we sleep, but it’s certa...

(A) No one knows why we sleep, but it’s certain that we need to. People who are prevented from sleeping begin to suffer obvious effects (产生明显的反应) after a few days—they think less clearly, and they fall asleep during the working hours; some may have hallucinations (幻觉).

There are no rules about sleep. Generally speaking, grown-ups sleep about 7 and a half hours each night and probably more than 60 per cent get between seven and eight hours. But perhaps eight per cent are quite happy with 5 hours or less, and four per cent or so find that they want ten hours or more. (B)如果你感觉好的话, you’re probably getting enough sleep. The important thing is not to worry how much other people get—their needs may be different. Exercise doesn’t seem to increase the need for sleep—office workers, for example, sleep for about as long as people doing physically active work.

Children sleep more than grown-ups—perhaps 14 to 18 hours soon after birth, going down to grown-up levels by early teenage. Sleep patterns (睡眠模式) also tend (倾向) to be different in the elderly, who may sleep less at night than they did when younger, find sleep getting worse, and often make it a rule to sleep during the daytime.

1.将(A)处画线部分译成汉语。

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2.将(B)处画线部分译成英语。

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3.回答问题。

How many hours of sleep do children need?

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4.在短文中找出与给句子意义相同的句子。

They are sleepy at work.

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5.请从下面的选项中给短文选个标题。

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A. There are no rules about sleep. B. No one knows why we sleep.

C. Sleeping is very important to us. D. Make it a rule to sleep.

九年级英语多任务混合问题中等难度题查看答案及解析

阅读理解

Why do we need to throw less away? There are two reasons. One is that some resources （资源） are nonrenewable （不可再生的） That means there is only a certain amount of that resource in the world . One example of this is oil. When we use up all the oil in the world, there will be no more.

There is another reason for throwing less away. All of our trash has to be put somewhere. Often , it is put into garbage dumps （垃圾场）. Much of that trash will be there for hundreds of years. The dumps will be filled up with all this trash.

There are three ways to cut down on trash.

One way is to recycle. When you recycle something, it means it is made into another shape and used again. Old newspaper may become paper bags. A glass jar can be melted（熔化）and made into a bottle .

Another way to cut down on trash is to reuse things. You can wash and use again a bottle that can hold mustard （芥末酱）or something else .

The third way to cut down on trash is to reduce the amount of trash you make, stop buying thing that you don’t need in the first place. That reduce the amount of the earth’s resources that you use.

1.How many reasons do we need to throw less away?

A. Three      B. five       C. two

2. When you reuse something, it means.

A. it is made into another shape and used again

B. it is used again

C. it isn’t used any more

3.All the ways of cutting down on trash in the passage are to________.

A. recycle and reuse things

B. recycles and reduce the amount of trash you make

C. reuse things recycle and reduce the amount of trash you make

4.If a broken plastic box is changed into a plastic ruler , the way is to________.

A. recycle      B. reuse      C. reduce

5. The word “reduce” in the passage means ________.

A. 还原          B. 减少           C. 增加

九年级英语阅读理解困难题查看答案及解析

Some inventions are so useful, but seem so simple, that we wonder why no one thought of them long ago. Post-it Notes, the pieces of paper that you can fasten almost anywhere and then remove without leaving any sign that they were there, are an example of such an invention.

　Post-it Notes were invented about twenty years ago by Art Fry, a scientist at 3M Corporation. The idea for the product came from a frustrating experience he often had while singing in his church choir. Fry used pieces of paper as bookmarks to mark the places in his book of songs, but these bookmarks were always falling out. He knew he needed a bookmark that would stay where he put it, but that he could remove without damaging the pages.

　Around that time, Fry heard about a new adhesive (粘合剂) that a workmate, Dr. Spence Silver, had created. This adhesive was special because it was sticky, but not too sticky. It was strong enough to hold papers together, but weak enough to not tear the paper when it was removed. Fry saw that the new adhesive could help solve his bookmark problem. One morning, Fry put some of the adhesive on the edge of a piece of paper. Just as he hoped, it made a perfect bookmark.

A short time later, Fry realized that his new invention had even more uses than being a great bookmark. He came to this realization when he wrote a note on one of his new "bookmarks" and attached it to a report he was going to give to a workmate. Soon, co-workers were asking Fry for more samples of his invention so that they could use the new type of notes themselves.

　Fry and some other people at 3M believed so much in the new product that they persuaded the company to give away thousands of the "sticky pieces of paper" for trial use(试用). When some salespeople at 3M went to offices and showed workers just how helpful the new type of notes could be, they immediately received many orders. As more and more people discovered how useful Post-it Notes could be, the product took off.

1.The invention of Post-it Notes showed that Art Fry________.

A. had a lot of knowledge　　　　　　　　

B. was very hard-working

C. was good at creative thinking　　　　　

D. loved his job in the church

2.In what way did Dr. Spence help Art Fry?

A. They worked together and often discussed science.

B. His invention of a special adhesive made Art's invention possible.

C. He advised 3M Corporation to give away lots of Post-it Notes for trial use.

D. He worked together with Art by providing the new adhesive for Art.

3.The underlined phrase "took off" means_______.

A. started to leave the ground　　　　

B. disappeared from the market

C. had even more uses　　　　　　　　

D. became popular very quickly

4.The biggest advantage of Post-it Notes is_______.

A. it can stay anywhere and leave no sign when removed　　

B. it is very cheap to use　　

C. it is good to write notes on 　　　　　　　　　　　　　　　　

D. it is very thin and beautiful

九年级英语阅读理解困难题查看答案及解析

缺词填空

We all know everyone needs to sleep. No matter when and how much a person sleeps, he or she needs some sleep to stay a 1. . That’s what all doctors thought until they heard about Herpin. Someone said Herpin n2. slept in his life. Could this be true? The doctors decided to see this strange man themselves.

Herpin was 90 years old when the doctors came to his home in New Jersey. They thought for sure that he got some s3. of some kind. So they stayed with him and w4. every movement he made. However, the result was very s5.. Though they watched him hour after hour and day after day, they never saw him sleeping.

In fact, Herpin did not even own a b6.. He never needed one. The only rest that Herpin sometimes got was s7. in a comfortable chair and reading newspapers. The doctors were puzzled by this strange continuous sleeplessness. They hoped to find out the real reason for it , so they asked him many q8..

They found only one answer that might e9. his condition. His mother had been injured several days before he was born.　 As a result, he came to the world a few days e10.. Was this the real reason? No one could be sure.

九年级英语单词填空中等难度题查看答案及解析

--- We need a new leader for our Helping Hands Club, but I don’t know ______. --- Why not Mary? She is always willing to help others.

A．what to choose                         B．how to choose

C．when to choose                         D．who to choose

九年级英语单项填空中等难度题查看答案及解析

—We need a new leader for our Helping Hands Club，but I don’t know_______.

—Why not Mary? She is always willing to help others.

九年级英语单项填空简单题查看答案及解析

—We need a new leader for our Helping Hands Club，but I don’t know_______.

—Why not Mary? She is always willing to help others.

A. what to choose      B. how to choose    C. when to choose      D. who to choose

九年级英语单项填空困难题查看答案及解析

Why would someone decide to stop eating? We know that the body needs food in order to work well. However, many people fast at some time during their lives. Why is this?

Some people fast for political reasons. In the early 20th century, women in England and the United States weren’t allowed to vote. So many women went on fast. They hoped that fasting would bring attention to it. Mohandas Gandhi, the famous Indian leader, fasted 17 times during his life. For Gandhi, fasting was a powerful political tool. In 1943, he fasted to bring attention to his country’s need for independence. For 21 days, he went without food. Another famous faster was Cesar Chavez. In the 1960s, he fasted for three weeks. Why? His goal was to bring attention to the terrible working conditions of farm workers in the United States.

Fasting is also a practice in many religions(宗教). Every year during the month of Ramadan, which is a religious holiday, Muslims(穆斯林) fast from sunrise to sunset. Many Indians fast at special time, and there was also a fasting holiday in ancient China.

Of course, not everyone fasts for political or religious reasons. People sometimes fast just because it makes them feel better. The American writer Mark Twain thought fasting was the best medicine for common illnesses. Whenever he had a cold or a fever, he stopped eating completely. He said that this always made his cold or fever go away. Another American writer, Upton Sinclair, discovered fasting after years of eating too much and headaches. His first fast lasted for 12 days. During this time, his headaches and stomachaches went away. Sinclair said that fasting also made him more alert and energetic.

Choosing to go without food can be very dangerous. However, that doesn’t stop people from fasting for political, religious, or health reasons.

1.The underlined word “fast” in Paragraph 1 most probably means “________”.

A.quickly B.go on a diet C.refuse to eat D.lose weight

2.Mohandas Gandhi fasted in 1943 for ________.

A.a religious holiday for Muslims B.his country’s need for independence

C.the women’s voting rights in Great Britain D.the equal rights of the black people in America

3.Which fasting is for health reason?

A.Upton Sinclair fasted for 12 days. B.Mohandas Gandhi fasted in 1943.

C.Cesar Chavez fasted for two weeks. D.Muslims fast from sunrise to sunset.

4.What can we learn from the passage?

A.Women like to go on fasting for politics.

B.You will be very famous if you fast for religions.

C.Fasting sometimes would be better for your health.

D.You needn’t take any medicine if you fast when you’re ill.

5.What may be the best title of the passage?

A.Reasons for fasting. B.Ways of fasting.

C.Advantages of fasting. D.Results of fasting.

九年级英语阅读单选困难题查看答案及解析

Years ago we didn’t know this, but recent science ____ that people who don’t sleep well soon get ill.

A. showed　　 B. has shown　　 C. will show　　 D. is showing

九年级英语单选题中等难度题查看答案及解析

The story itself was certainly a popular one, but there is no doubt that it was pure 　　　　 .

A. invention B. instruction C. introduction D. information

九年级英语单选题中等难度题查看答案及解析