If some parts of a body are very sick or dama...

If some parts of a body are very sick or damaged, then doctors might need to remove them. Another way doctors can help is to grow new tissue to replace what is sick or damaged. This is called regenerative medicine (再生医学).

Regenerative medicine sounds like something from a science fiction movie but it is not a new idea. Inside our bones, we have something called ‘marrow’, which makes our blood and keeps us healthy. Doctors have been giving sick people the bone marrow from other healthy people for the last 30 or 40 years, and this is a kind of regenerative medicine.

Newer developments in regenerative medicine include growing new skin in a laboratory and using it to help people who have been hurt in fires or accidents. Another example of regenerative medicine is a technique developed from studying frogs and mice. When cells are old, like in adults, they can’t change what they do in our bodies. For example, a skin cell can’t change into an eye cell. But when cells are very young, they can become any cell type. These young cells are called stem cells, and doctors can use them to grow any type of tissue, such as skin, heart or eye. John Gurdon and Shinya Yamanaka won the 2012 Nobel Prize for their studies in this area.

Professor Fiona Watt, from the Centre of Regenerative Medicine at King’s College, London, believes that regenerative medicine is so exciting because many different kinds of experts need to work together. 3D printers may be used to print new bones by experts, who need to work closely with university scientists and the surgeons who do the operations in hospitals.

We can not yet grow new arms or legs for people, but the science fiction dream of regenerative medicine may be closer than we think. Perhaps in the future, doctors will be able to grow whole new bodies for us.

1.What’s the main idea of the passage?

A. How to help very sick or damaged people.

B. Regenerative medicine and science fiction.

C. We can grow our new bodies in the future.

D. Regenerative medicine and its development.

2.Which of the following is right according to this passage?

A. Marrow can help grow new bones.

B. Stem cell can be used to grow any type of tissue.

C. Surgeons now use 3D printers to print new bones.

D. Regenerative medicine is a new science in medicine.

3.What’s the writer’s attitude to the development in regenerative medicine?

A. Pessimistic.　　 B. Optimistic.

C. Doubtful.　　 D. Indifferent.

高三英语阅读理解困难题查看答案及解析

If you are ________ then exercise, or the movements you make, will cause you some degree of physical harm.

A．out of breath　     B．out of work

C．out of luck　     D．out of condition

高三英语单项填空中等难度题查看答案及解析

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(翻来覆去) 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, 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 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 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.”

1.What is the best title of the passage? (Please answer within 5 words)

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.

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

4.Someone says that the longer you sleep, the better you feel. Try to find an argument from the passage against the idea. (Please answer within 15 words)

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

高三英语填空题中等难度题查看答案及解析

阅读下面短文，根据其内容写一篇60词左右的内容概要。

Are you sick of going to bed late and waking up tired? Then grab your hiking boots and a tent. A new study suggests that a couple days of camping in the great outdoors can reset your circadian (昼夜节律的)clock and help you get more sleep.

The circadian clock, more commonly known as the body clock, is an internal system that tells our bodies when it's time to go to sleep and when it's time to wake up. Scientists track this clock by measuring the amount of melatonin(褪黑激素)circulating in a person’s blood at any given time. In a healthy sleeper, melatonin levels rise a few hours before bedtime, stay high through the night, and then settle back down when it's time to wake up.

In our modern society, however, most of us stay up many hours past sunset and would probably sleep in many hours after sunrise if we could. And the trouble is that your melatonin levels may still be high when your alarm clock goes off in the morning, which leads to grogginess(头晕眼花). It may also have other health consequences as well, such as diabetes(糖尿病), overweight problems and heart disease

Professor Kenneth P. Wright of the University of Colorado in the US wanted to see if our body clocks can be reset by a short stay in nature. His team recruited (招收)14 physically active volunteers in their 20s and 30s. Nine went on a weekend camping trip, while the other five stayed home. At the end of the weekend, the researchers reported that in just two days, the campers' body clocks had shifted so that their melatonin levels began to rise more than an hour earlier than they did before they left on the trip. By contrast, the body clocks of the group that stayed home shifted even later over the course of the weekend. ''This tells us we can reset our clocks fast, '' Wright said.

Therefore, if you want to change your sleep patterns you could try to increase your exposure to natural light during the day and decrease the amount of artificial light you see at night.

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高三英语概要写作中等难度题查看答案及解析

In some islands north of Scotland, if head lice (头虱) left their host, he became sick and feverish. Therefore, sick people had lice put in their hair intentionally. There was a method in their madness： As soon as the lice had settled in again, the patient improved. The story explains the confusion of cause and effect. If the lice leave the sick host, it is because he has a fever and they simply get hot feet，and when the fever breaks，they return. Such false causality (假因果关系）misleads us every day.

Consider the headline: “Fact: Women Who Use Shampoo XYZ Every Day Have Stronger Hair.” It says very little -- least of all, that the shampoo makes your hair stronger. It might simply be the other way round: women with strong hair tend to use Shampoo XYZ -- and perhaps that’s because it says “especially for thick hair” on the bottle.

Another example: Scientists found that long periods in the hospital did harm to patients. But, clearly, patients who are dismissed immediately are healthier than those who must stay on for treatment.

Recently I read that students get better grades at school if their homes contain many books. This study was surely a shot in the arm for booksellers, but it was also false causality. This simple truth is that educated parents tend to value their children's education more than uneducated ones do, and they often have more books at home. In short, a dust-covered copy War and Peace alone isn't going to influence anyone's grades; what counts is parents' education levels, as well as their genes.

There was also the supposed relationship between the birth rate and the numbers of stork (鹳）pairs in Germany. Both were in decline, and if you plot (描绘） them on a graph (曲线图)，the two lines of development from 1965 to 1987 appeared almost the same. Does this mean the storks actually bring babies? Obviously not. This was a purely accidental connection.

In conclusion: Connection is not causality. Take a closer look at linked events: Sometimes what is presented as the cause turns out to be the effect, or just the other way round， and sometimes there is no link at all -- just like with storks and babies.

1.According to the first paragraph, people in some islands north of Scotland _________.

A. found a way to get rid of head lice

B. used an effective method to keep flt

C. made head lice a part of their life

D. died due to infections with head lice

2.Which is an example of false causality?

A. Women with strong hair tend to use a certain shampoo.

B. The birth rate and the stork population are connected.

C. Longer periods in the hospital benefit patients.

D. Lice can make a person sick and feverish.

3.The underlined phrase “ a shot in the arm” in Paragraph 4 means _______.

A. pain B. defeat

C. guidance D. encouragement

4.According to the author, students get better grades probably because ______.

A. their homes are full of books

B. they have read War and Peace

C. their educated parents value education

D. their parents are successful booksellers

5.We can draw the conclusion from the passage that _______.

A. connection arc pure accidents

B. cause and effect are interdependent

C. connections are mostly cause and effect

D. linked events may turn out to be unrelated

高三英语阅读理解中等难度题查看答案及解析

I'll bring some medicine just ________some of us get sick while travelling．

A．As if          B．in case         C．even though   D．as long as

高三英语单项填空中等难度题查看答案及解析

Some people skip meals or eat only tiny amounts of food and may have conditions ______ rob the body of the nutrients ______ needs to grow and stay healthy.

高三英语单项填空简单题查看答案及解析

1

Some of us fail to learn that pain is the body’s way of informing the mind ______ we are doing something wrong, not necessarily ______ something is wrong.

A. that, what                         B. that, that                   C. what, that                           D. what, what

高三英语简单题查看答案及解析

If you are interested to find a part-­time job or learn something different during your spare time, you can have a look at the following jobs offered by the DC Public Library.

Teens of Distinction Program

The DC Public Library offers part-­time jobs for teens through the Teens of Distinction Program. Teens work 10­-12 hours per week all year long, helping the library with important tasks and projects. The Teens of Distinction Program is now hiring! To apply, you have to：

● be a DC resident

● have and maintain at least a 2.5 grade point average

● be 16 to 18 years old

● be able to work 10­-12 hours per week

● be able to work for DCPL for at least 9 months

Oh, and of course you have to impress us with your wonderful personality!

Teen Volunteer Opportunities

If you want to earn community service hours for school, Youth202 is a good choice.

Youth202 is a radio program created by youth and for youth. You can learn radio production skills, interview people around you, and help keep other teens to learn news, events, and anything else you think is important.

Summer Youth Employment Program (SYEP)

Every summer, teens can work here to help library customers organize books and learn lots of new skills, such as program planning, writing and media production.

On Friday, January 25 at 12:15 pm, the application for the 2014 SYEP will be open to teens between the ages of 14 and 21.

Applications will be processed on a first­come, first­served basis. Space is limited this year, so teens are encouraged to apply early, and remember not to miss the deadline, Saturday, February 16.

1.Working for the Teens of Distinction Program, teenagers will ________．

①become a DC resident

②work 10­-12 hours per week

③work for DCPL for at least 9 months

④have a wonderful personality

A. ③④　　 B. ②③　　 C. ①②③　　 D. ①③④

2.Who has the biggest chance to work for the 2014 SYEP?

A. A teenager who applies early.

B. A teenager who is popular.

C. A teenager who is smart.

D. A teenager who gets high grades in exams.

3.The aim of text is to ________．

A. introduce the DC Public Library

B. describe the job of library workers

C. offer teenager part-time jobs in the DC Public Library

D. teach how to apply for part-­time jobs

高三英语阅读理解中等难度题查看答案及解析

Some of us fail to learn that pain is the body’s way of informing the mind ______ we are doing something wrong, but not necessarily ______ is wrong.

A．that, what         B．that, where        C．what, that         D．what, what

高三英语单项填空简单题查看答案及解析