A healthy dose of sunshine may be the secret ...

A healthy dose of sunshine may be the secret to staying young, British scientists have revealed.

Vitamin D is produced naturally by the skin in response to sunlight and may help to slow the aging process and protect against heart disease, according to the study.

Researchers from King's College London studied 2,160 women aged between 18 and 79, looking at their telomeres - a biological marker of ageing found in DNA. As people get older their telomeres get shorter and they become more susceptible to certain illnesses.

But the study found women with high levels of vitamin D had comparatively longer telomeres - a sign of being biologically younger and healthier.

The study suggests vitamin D may help to slow down the ageing process of DNA, and therefore the ageing process as a whole.

Lead researcher Dr Brent Richards said: "These results are exciting because they demonstrate for the first time that people who have higher levels of vitamin D may age more slowly than people with lower levels of vitamin D.

"This could help to explain how vitamin D has a protective effect on many ageing related diseases, such as heart disease and cancer."

He said further studies are required to confirm the findings.

Professor Tim Spector, head of KCL's twin research unit, and a co-author of the report, added: "Although it might sound absurd, it's possible that the same sunshine which may increase our risk of skin cancer may also have a healthy effect on the general ageing process."

Vitamin D made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.

Other studies have suggested the vitamin plays a key role in protecting against cancer and heart disease.

1.The passage mentions all of the items listed below except_______.

A.   The findings haven’t been confirmed entirely.

B.   People become easily infected with some illnesses when they get older.

C.   Vitamin D obtained through fish, eggs and breakfast cereals accounts for 10 percent of the body’s supply.

D.   The discovery could help explain how vitamin D has a positive effect on cancer.

2.The phrase “demonstrate for” in the 7th paragraph probably means________.

A. claim        B. prove        C. think           D. provide

3.It can be inferred that________.

A. Women with high levels of vitamin D have shorter telomeres.

B. Studies have confirmed the findings.

C. Sunshine may be a cause of the risk of skin cancer.

D. If someone has heart disease, sunshine may help him to relieve the disease.

4.The main idea of the passage is that_________.

A. Vitamin D can help protect against cancer and heart disease.

B. sunshine helps keep you young.

C. what effect vitamin D has on human’s body.

D. high levels of vitamin D make people keep young.

高三英语阅读理解中等难度题查看答案及解析

A healthy dose of sunshine may be the secret to staying young, British scientists have disclosed.

Vitamin D is produced naturally by the skin in response to sunlight and may help to slow the ageing process and protect against heart disease, according to the study.

Researchers from King's College London studied 2,160 women aged between 18 and 79, looking at their telomeres - a biological marker of ageing found in DNA．As people get older, their telomeres get shorter and they are easy to have illnesses.

But the study found women with high levels of vitamin D had comparatively longer telomeres - a sign of being biologically younger and healthier.

The study suggests vitamin D may help to slow down the ageing process of DNA, and therefore the ageing process as a whole.

Lead researcher Dr Brent Richards said: "These results are exciting because they prove for the first time that people who have higher levels of vitamin D may age more slowly than people with lower levels of vitamin D．

"This could help to explain how vitamin D has a protective effect on many ageing related diseases, such as heart disease and cancer."

He said further studies are required to confirm the findings.

Professor Tim Spector, head of KCL's twin research unit, and a co-author of the report, added: "Although it might sound absurd(荒谬的), it's possible that the same sunshine which may increase our risk of skin cancer may also have a healthy effect on the general ageing process."

Vitamin D made by the action of sunlight on the skin accounts for 90 per cent of the body's supply, but lower levels can also be obtained through food such as fish, eggs and breakfast cereals.

Other studies have suggested the vitamin plays a key role in protecting against cancer and heart disease.

1.What’s the best title of this passage?

A.Sunshine helps to keep you young.

B.Vitamin D has a protective effect on many diseases.

C.Telomeres - a biological marker of ageing.

D.People have found the secret to having a long life.

2.How can people get Vitamin D?

A.through water.       B. through sunshine.

C.through food.        D.both B and C.

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

A.women with high levels of vitamin D shows a sign of being biologically younger and healthier.

B.vitamin D has a protective effect on many ageing related diseases.

C.too much sunshine may increase our risk of skin cancer.

D.It has been proved that sunshine helps to keep you young.

高三英语阅读理解中等难度题查看答案及解析

The secret of staying slim could be as simple as keeping your mind on your meals. Research suggests that 1 ourselves from distractions and concentrating completely on the food that is in front of us, helps us stay in 2 . Such ‘mindful eating’ ensures that the 3 is in tune with (协调) the body, enabling it to ‘hear’ the chemical 4 that tell it that we are full。

Digestion 5  a complex series of signals between the gut (肠道)and the nervous system and it takes about 20 minutes for the brain to tell that the body has eaten enough. This means that if someone eats too 6 , the signals will come slowly, leading to 7 .

Scientists say that distractions make it8 for us to remember what we have eaten. This absent-mindedness stops us from feeling 9  – and sends us reaching for some snacks later on. It is thought that our memory of what we have eaten plays a key role in 10  appetite. This means that distractions stop us from remembering the detail of what we have eaten – leaving us feeling 11 .

Advocates of mindful eating 12 chewing food slowly and taking note of its color, smell and flavor. Before 13  dieters should ask themselves if they are really hungry---and if not, distract themselves by going for a walk or reading. Done14 , mindful eating may not only leave you 15 , but also make you enjoy mealtimes.

1.A. feeling      B. protecting      C. freeing        D. saving

2.A. shape       B. health         C. touch          D. business

3.A. appetite     B. speed         C. emotion        D. mind

4.A. orders      B. sounds        C. desires          D. messages

5.A. discovers    B. involves      C. sends           D. holds

6.A. quickly     B. slowly        C. gradually        D. suddenly

7.A. imbalance   B. damage       C. overeating       D. failure

8.A. clearer      B. easier         C. sharper         D. harder

9.A. full         B. great         C. comfortable      D. delicious

10.A. building     B. losing        C. controlling       D. improving

11.A. upset       B. eager         C. hungry          D. desperate

12.A. mind       B. advise        C. avoid            D. consider

13.A. snacking    B. running       C. writing           D. cooking

14.A. quietly     B. strongly       C. properly          D. poorly

15.A. slim        B. fat           C. strong            D. calm

高三英语完型填空中等难度题查看答案及解析

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式，并写在答题卡上。

The secret of staying slim could be as simple as keeping your mind on your meals．

Research suggests that_1.(free) ourselves from distractions and concentrating completely on the food that is in front of us_2. (help) us stay in shape． Such "mindful eating" ensures that the mind is in tune with(协调) the body, enabling it to "hear" the chemical messages3.tell it that we are full． Digestion involves a complex series of4. (signal) between the gut(肠道) and the nervous system and it takes about 20 minutes for the brain_5. (tell) that the body has eaten enough． This means that if someone eats too quickly, the signals will come slowly, leading to overeating． Scientists say that distractions make it6._ (hard) for us to remember what we have eaten． This absent-mindedness stops us from feeling full _7._sends us reaching for some snacks later on． It is thought that our memory of what we have eaten plays a key role_8.controlling appetite． This means that distractions stop us remembering_9.detail of what we have eaten, leaving us feeling hungry． Before snacking, dieters should ask themselves if they are really hungry and if not, distract themselves by going for a walk or reading．

Done_10._ (proper), mindful eating may not only leave you slim, but also make you enjoy your mealtimes．

高三英语语法填空中等难度题查看答案及解析

Of the two sisters, Betty is          one, and she is also the one who loves to be quiet．

A．a younger                B．a youngest

C．the younger              D．the youngest

高三英语单项填空中等难度题查看答案及解析

The secret to eating less and being happy about it may have been found years ago — by McDonald’s. According to a new study from Cornell University’s Food and Brand Lab, small non-food rewards — like the toys in McDonald’s Happy Meals — stimulate the same reward centers in the brain as food does.

The researchers, led by Martin Reimann, carried out a series of experiments to see if people would choose a smaller meal if it was paired with a non-food item.

They found that the majority of both kids and adults chose a half-sized portion when combined with a prize. Both options were priced the same.

Even more interesting is that the promise of a future reward was enough to make adults choose the smaller portion. One of the prizes used was a lottery ticket (彩票), with a $10, $ 50 or $100 payout, and this was as effective as a tangible gift in persuading people to eat less.

“The fact that participants were willing to substitute part of a food item for the mere prospect of a relatively small monetary award is interesting,” says Reimann. “One explanation for this finding is that possible awards may be more emotionally inspiring than certainty awards. The uncertainty of winning provides added attraction and desirability through emotional ‘thrills’. The possibility of receiving an award also produces a state of hope — a state that is in itself psychologically rewarding.” In other words, there’s a reason why people like to gamble.

How might this knowledge be used to help people eat more healthily?

One possibility is a healthy option that offers the chance to win a spa weekend. Or maybe the reward of a half-sized portion could be a half-sized dessert to be claimed only on a future date. That would get you back in the restaurant — and make you eat a little less.

1.What do we learn about McDonald’s inclusion of toys in its Happy Meals?

A.It may throw light on people’s desire to find a secret.

B.It has proved to be key to McDonald’s business success.

C.It appeals to kid’s curiosity to find out what is hidden inside.

D.It may be a pleasant way for kids to reduce their food intake.

2.What is the finding of the researchers led by Martin Reimann?

A.Reducing food intake is not that difficult if people go to McDonald’s more.

B.Most kids and adults don’t actually feel hungry when they eat half of their meal.

C.Eating a smaller portion of food does good to the health of kids and adults alike.

D.Most kids and adults would choose a smaller meal that came with a non-food item.

3.What is most interesting in Martin Reimann’s finding?

A.Kids preferred an award in the form of money to one in the form of a toy.

B.Adults chose the smaller portion on the mere promise of a future award.

C.Both kids and adults felt satisfied with only half of their meal portions.

D.Neither children nor adults could resist the temptation of a free toy.

4.What can we infer from Martin Reimann’s finding?

A.People should eat much less if they wish to stay healthy and happy.

B.More fast food restaurants are likely to follow McDonald’s example.

C.We can lead people to eat less while helping the restaurant business.

D.More studies are needed to find out the influence of emotion on behavior.

高三英语阅读理解中等难度题查看答案及解析

I may not be the wisest person on this planet．but I will tell you a little secret to happiness：Help other，，and live life．It is that simple．Just help a friend study for a test，or volunteer at a nursing home ．I learned this after a long，hard search．

I was feeling really down because my long4ime friend had died．Then I started a six-week volunteering at a nursing home all day every Saturday．My routine was to serve the meal and clean up．After that，I would wait for the head nurse to tell me what to do．

One day I was told to go to Room 117 to make sure the patient was all right．In the room I found a boy of eight sitting in his bed watching a movie．I was shocked to see a child in this seemingly forgotten nursing home for the old．He was so small and weak that you had to look closely to find him．He motioned for me to sit down．I grabbed his medical chart from which later I found out he had a terminal illness．

We started to talk，and I found out that his family rarely visited，and all he did ever7 day was watch TV．I wanted to cry for him，and for my lost friend．As we talked，he had a smile on his face，and I asked him why．

"The entire two hours I've been here you've never lost that smile．With this horrible disease，how do you still manage to stay happy？"

He thought for a moment，and then said that too many people are dead even before they die．

They walk around feeling that God has cursed (诅咒) them and that they have nothing to live for．

The boy said that he would not be like that．He wakes every morning thankful to see another sunrise．He keeps his window open so that he can smell the flowers and feel the heat of the sun．He also said that he has hope．

"Too many people haven't seen much of that around here，" he said，" Life is full of hope and we need to live life before it is gone．"

I don’t know what happened to him．I assume he passed away，but his lesson lives on．I now wake up and live each day to the fullest．The key to life is not money or fame，but the lessons we learn from it．

1.The nursing home in the passage is mainly for_______

A． the elderly　 B． the homeless

C． the disabled　　 D． the abandoned

2.The boy stayed happy mainly due to_______．

A． wonderful TV programs

B． his positive attitude

C． good medical condition

D． others' encouragement

3.The writer participated in the volunteering job in order to_______．

A． find out the secret

B． search for help

C． enrich experiences

D． get out of sadness

4.What would be the best title for the passage？

A． A Lesson in Hope

B． The Life of a Sick Boy

C． A Voluntary Job

D． The Meaning of Life

高三英语阅读理解中等难度题查看答案及解析

I may not be the wisest person on this planet. but I will tell you a little secret to happiness: Help other,, and live life. It is that simple. Just help a friend study for a test, or volunteer at a nursing home . I learned this after a long, hard search.

I was feeling really down because my long4ime friend had died.　 Then I started a six-week volunteering at a nursing home all day every Saturday. My routine was to serve the meal and clean up. After that, I would wait for the head nurse to tell me what to do.

One day I was told to go to Room 117 to make sure the patient was all righL. In the room I found a boy of eight sitting in his bed watching a movie. I was shocked to see a child in this seemingly forgotten nursing home for the old. He was so small and weak that you had to look closely to find him.　 He motioned for me to sit down.　 I grabbed his medical chart from which later I found out he had a terminal illness.

We started to talk, and I found out that his family rarely visited, and all he did ever7 day was watch TV. I wanted to cry for him, and for my lost friend. As we talked, he had a smile on his face, and I asked him why.

"The entire two hours I've been here you've never lost that smile. With this horrible disease, how do you still manage to stay happy?"

He thought for a moment, and then said that too many people are dead even before they die.

They walk around feeling that God has cursed (诅咒) them and that they have nothing to live for.

The boy said that he would not be like that.　 He wakes every morning thankful to see another sunrise.　 He keeps his window open so that he can smell the flowers and feel the heat of the sun.　 He also said that he has hope.

"Too many people haven't seen much of that around here," he said," Life is full of hope and we need to live life before it is gone. "

I don’t know what happened to him. I assume he passed away, but his lesson lives on. I now wake up and live each day to the fullest. The key to life is not money or fame, but the lessons we learn from it.

1.The nursing home in the passage is mainly for _　　　　　　　　

A. the elderly　　　　 B. the homeless

C. the disabled　　 　 D. the abandoned

2.The boy stayed happy mainly due to　　　　 .

A. wonderful TV programs

B. his positive attitude

C. good medical condition

D. others' encouragement

3.The writer participated in the volunteering job in order to 　　　　 .

A. find out the secret

B. search for help

C. enrich experiences

D. get out of sadness

4.What would be the best title for the passage?

A. A Lesson in Hope

B. The Life of a Sick Boy

C. A Voluntary Job

D. The Meaning of Life

高三英语阅读理解中等难度题查看答案及解析

____you eat the correct foods _____be able to keep fit and stay healthy．

A．Only if ; will you                   B．Only if ;you will

C．Unless ; will you            D．Unless ; you will

高三英语单项填空中等难度题查看答案及解析

______ you eat the correct foods ______ be able to keep fit and stay healthy.

A. Only if; you will   B. Unless; you will   C. Only if; will you    D. Unless; will you

高三英语单项填空中等难度题查看答案及解析