Researchers have announced the result of two studies on the health effects of the drug aspirin．One study shows aspirin can sharply reduce the chance that a healthy, older man will suffer from a heart 题目和参考答案——青夏教育精英家教网—

A purple tomato genetically engineered to contain nutrients more commonly seen in dark berries helped cancer in mice, British researchers said on Sunday. The finding, published in the journal Nature Biotechnology, bolsters the idea that plants can be genetically modified(changed) to make people healthier.
Cancer-prone mice fed the modified fruit lived significantly longer than animals fed a standard diet with and without regular tomatoes, Cathie Martin and colleagues at
the government-funded John Innes Center in Britain reported. “The effect was much bigger than we had expected.” said Martin, a plant biologist.
The study focused on anthocyanins，a type of antioxidant found in berries such as blackberries and blackcurrants that have been shown to lower risk of cancer, heart diseases and some neurological diseases. While an easy way to improve health, many people don’t eat enough of these fruits, the researchers said. Using genes from the snapdragon flower, the researchers discovered they could get the tomatoes to make anthocyanins---- turning the tomato purple in the process.
Mice genetically engineered to develop cancer lived an average of 182 days when they were fed the purple tomatoes, compared to 142 days for animals on the standard diet. “It is greatly encouraging to believe that by changing diet, or specific components in the diet. You can improve health in animals and possibly humans.” Martin said in a telephone interview.
The researchers warned that trials in humans are a long way off and the next step is to investigate( look into) how the antioxidants actually affect the tumors to promote better health. But the findings do support the formal research suggesting that people can significantly improve their health by making simple changes to the daily diet, other researchers said.
“It’s exciting to see new techniques that could potentially make healthy foods even better for us.” said Doctor Lara Bennett, science information office at Cancer Research UK. “ But it is too early to say whether anthocyanins obtained through diet could help to reduce the risk of cancer.”
小题1:The text mainly tells us _________.

Why are people interested in eating raw foods or whole foods? One reason is that eating these types of food reduces the risk of acid accumulation in your body.
Raw and whole foods are usually digested more efficiently than cooked and refined foods. When we cook foods, we destroy the natural enzymes (酶) that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes, our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream. In both instances, the result is obesity. When too many nutrients are absorbed at once, the body grows fat. Improperly digested food moves slowly through the digestive tract, where it becomes increasingly acidic. To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs.
Processed foods contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat. Processed foods also upset the digestive cycle. The body will either identify these foods as allergens and then store them safely away from the organs as fat, or the remains of undigested food will become acidic and enter the bloodstream as acid waste, which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body’s cells. The body’s metabolism (新陈代谢) becomes inactive, and the result is weight gain and obesity.
The accumulation of acid in the digestive tract makes digestion increasingly inefficient. When that happens, even healthy foods can become acidic and the food allergies will become more common.
To stop this vicious（恶性的） circle in its tracks, people need to consume food and supplements that will neutralize the acid already accumulated in body. Eating the right types of raw and whole foods can help. It’s also important to restore your enzyme balance. You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production. If you truly want to change and help your body heal itself, you need to take an active approach.
小题1:It can be inferred from Para. 2 that __________.

A．foods with natural enzymes help people keep fit

B．we’d better be cautious about raw and whole foods

C．it is essential for people to protect their vital organs

D．giving up cooked and refined foods is a new lifestyle

小题2:Processed foods are unhealthy because they __________.

A．destroy body’s cells	B．may lead to obesity
C．are difficult to digest	D．stop body’s metabolism

小题3:What is the main purpose of this passage?

A．To warn people of the problem of obesity.

B．To advocate eating more raw and whole foods.

C．To inform people of the harm of processed foods.

D．To tell the differences between raw and processed foods.

小题4:What is likely to be talked about following the last paragraph?

A．Different causes of acid accumulation.

B．Correct ways to cook raw foods.

C．Suitable types of raw and whole foods.

D．Active approaches to avoid acid.

小题5:What can we learn from the text?

A．Processed foods are good for our appetite mechanism.

B．Processed foods also comfort the digestive tract.

C．T he accumulation of acid in the digestive tract makes digestion more effective.

D．Eating the right types of raw and whole foods does good to our body.

Everyone knows that exercise is important. We all need to exercise. Doctors say it is good for us. It makes your heart and body strong. Children who often exercise are more alert (灵活). This means they do better in tests and schoolwork than those who don’t exercise.
There are many ways to exercise. You can walk, run, swim, skate, or play ball games. Make sure you exercise in the following ways; you have to like what you’re doing. Exercise enough— but not too much. It’s best to exercise twice each week, Thirty minutes each time is enough. Try all kinds of things until you find one, two or even three sports that feel right for you.
You can exercise at fitness centers. They have a lot of equipment（设备）there. The equipment will help to exercise your arms, legs and other parts of your body to make you fit. Some people buy equipment for their homes. But it is very expensive.
Exercising can be fun. Friends can exercise together at a fitness center or they can play sports together. How do you exercise?
小题1:In the text, the writer tells us that we all need to .

小题2:Which of the following sports is not mentioned (提到) in the next?

小题3:The words “fitness centers” in the next mean .

小题4:The sentence, Children who often exercise are more alert, tells us that people who often exercise can do better in .

小题5:Exercising can be fun, because .

A．it makes your heart and body strong

B．it makes you study better

C．people can buy equipment for their home

D．friends can play sports together

The physical memory dump error is a big problem that affects even the most advanced computer systems．Although it's quite a rare error, it's one of the most stopping what you're doing and restarting your computer—making you lose all your unsaved data．This is a big problem, but there is actually a very easy way to fix it．
There are two reasons why the physical memory dump happens．The first is pretty simple and is to do with the "hardware", and if any of these pieces are not fit for your system, it will cause the physical memory dump．So, if you've recently added any hardware to your PC, then take that out and see if it works．
The other reason is your system, the "registry"．The registry is a big database that operates in the background of Windows, storing all sorts of settings and information about your PC．The problem with the registry is that since it has so many important files inside, it's constantly got hundreds of files open every time you use your PC．And because there are so many files to open at once, Windows is constantly getting confused, leading it to save many of these files in the wrong way．These files go wrong when saved wrongly, making them difficult for your computer to read．However, if it can't read the files at all, it has no choice but to stop everything it's doing and restart your PC．This is why the physical memory dump error appears so easily—because when a registry file is so wrong that it can't be read, your computer needs to refresh itself immediately．
This latter reason for causing the physical memory dump is actually extremely common and the likelihood is that your PC is suffering from it, if you're seeing this error．Luckily, it's also incredibly easy to fix—you just need to use a software tool called a "registry cleaner" to go through the registry and fix all the problems in there．
小题1:From the text we can infer that ________．

A．the dump error often happens to your PC

B．the dump can be dealt with easily

C．only the advanced computers suffers from the error

D．the dump error can cause the data in your PC to be lost

小题2:The reason that your PC has the dump error is that ___________．
A．the hardware loses its memory
B．your Windows needs to be upgraded
C．you have saved wrong files in the PC
D．you have stored too many files in the PC．
小题3:What’s problem with the registry when your PC goes wrong?
A．The register can’t read the files correctly．
B．It must open 100 files every time you use your PC．
C．The register doesn’t agree with the database．
D．The register must save many important files inside．
小题4:What does a registry cleaner means?

A．A software which can help you save time．

B．A software which can remove unnecessary files

C．A software which can repair the machine．

D．a software which makes your PC down．

Elderly adults who regularly drink green tea may stay more active and independent than their peers over time，according to a Japanese study that covered thousands of people．
Green tea contains antioxidant chemicals that may help ward off the cell damage that can lead to disease．Researchers have been studying green tea's effect on everything from cholesterol(胆固醇)to the risk of certain cancers，with mixed results so far．
For the new Japanese study，researchers decided to examine the question of whether green tea drinkers have a lower risk of frailty and disability as they grow older．
Tomata and his colleagues followed nearly 14，000 adults aged 65 or older for three years．
They found those who drank the most green tea were the least likely to develop “functional disability”，or problems with daily activities or basic needs，such as dressing or bathing．
Specifically，almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled，compared with just over 7 percent of people who drank at least five cups fl day．
The study did not prove that green tea alone kept people active as they grew older．
Green-tea lovers generally had healthier diets，including more fish，vegetables and fruit，as well as more education．lower smoking rates，fewer heart attacks and strokes，and greater mental sharpness．
They also tended to be more socially active and have more friends and family to rely on．
Although it's not clear how green tea might offer a buffer(缓冲剂)against disability，Tomata's team did note that one recent study found green tea extracts(提炼物)seem to increase leg muscle strength in older women．
While green tea and its extracts are considered safe in small amounts，they do contain caffeine and small amounts of vitamin K，which means it could block drugs that prevent blood thickened．
小题1:Which of the following can summarize the passage best?

A．Green tea makes you less active．

B．Green tea makes you less disabled．

C．Green tea makes you more friendly．

D．Green tea makes you more educated．

小题2:The underlined word“ward off”in Paragraph 2 probably means .

小题3:Tomata and his colleagues wanted to .

A．prove whether the Japanese study is correct

B．know if green tea drinkers are independent

C．help nearly 14，000 adults aged 65 or older

D．study green tea's effect on cholesterol

小题4:Which of the following is NOT the advantage of green tea?

A．Reduce functional disability．

B．Keep old people active．

C．Make more friends．

D．Suffer fewer heart attacks．

小题5:It can be inferred from the last paragraph .

A．green tea is safe to drink

B．green tea should be drunk properly

C．green tea is poisonous for old people

D．vitamin K is helpful to us

According to a new study by Israel researchers from University of Haifa, posting blogs to express feelings and emotions is therapeutic for children aged 13-17. Psychology professors Meyran Boniel-Nissim and Azy Barak have found that a teenager writing a publicly-viewed blog on the Internet is more effective for relieving stress rather than keeping a private diary. The study, published in the journal Psychological Services, supports that expressing oneself through writing can be therapeutic.
To conduct the research, Boniel-Nissim and Barak randomly selected Israeli high school students who displayed a certain degree of stress. The teenagers were then divided into six groups. Two groups were asked to post blogs twice a week about their social difficulties, but only one of them was asked to open the blogs for comments. The next set of groups were also asked to blog twice a week to post about whatever was going on in their mind, again with one group allowing comments. The two control groups were asked to keep an old-fashioned private diary.
The researchers then collected the blog posts and diaries to discuss the adolescents’ emotional and social position. From the research, they saw that the greatest improvement in mood was with the bloggers who wrote about their personal troubles and allowed people to interact with their posts. The research also noted that the comments were mostly positive and constructive. Boniel-Nissim and Barak said that the commentators’ interactions helped the bloggers while they were distressed. The conclusive research noted that expressing yourself on the Internet not only let others know what was personally going on with you, but also helped you figure out some things about yourself too.
小题1:The underlined word “therapeutic” in Paragraph 1 can be best explained as “ ”.

A．attractive to teens

B．addictive for children

C．making people feel calm and relaxed

D．able to be easily hurt

小题2:______________were selected for the research.

A．Those who blogged regularly.

B．Those who suffered from stress.

C．Those who had never blogged before.

D．Those who had poor social skills.

小题3:The research shows that teens benefit most when .

A．they blog and allow comments

B．they discuss their study on the blog

C．they keep a traditional diary

D．they comment on someone else’s blog

小题4:We can infer from the last paragraph that blogging ___________.

A．should not always be opened to comments

B．is most useful in improving one’s mood

C．is not an effective way to express one’s feelings

D．can help students see their problems better

A team of US psychologists have found that talking to another person for ten minutes a day helps with memory.
"Socializing is just as effective as more traditional kinds of mental exercise in boosting memory and intellectual performance," Oscar Ybarra, a psychologist at the University of Michigan Institute for Social Research, said in a statement.
In one investigation, they analyzed data on 3610 people, aged 24 to 96.
They found that the higher their level of social interaction (交流), the better their cognitive (认知的) functioning. Social interaction includes getting together or having phone chats with relatives, freinds and neighbors.
In another experiment, the researchers conducted lab tests on 76 college students, aged 18 to 21, to evaluate how social interactions and intellectual exercises affected the results of memory and mental performance tests.
The students were divided into three groups: the social interaction group had a discussion of a social issue for 10 minutes before taking the tests; the intellectual activities group completed three tasks (including a reading comprehension exercise and a crossword puzzle) before the tests; and a control group (对照组) watched a 10-minute clip (电源片段) of the Seinfeld television show.
"We found that short-term social interaction lasting for just 10 minutes improved participants’ intellectual performance as much as engaging in so-called ’intellectual’ activities for the same amount of time," Ybarra said.
The study was expected to be published in the February issue of the journal Personality and Social Psychology Bulletin.
小题1:The underlined word "boosting" in the second paragraph can be replaced by ______.

小题2:Which is not included in social interaction?

A．Having a talk with a neighbor.	B．Attending a birthday party.
C．Watching TV at home alone.	D．Calling your classmates

小题3:What’s the purpose of the experiment on 76 college students?

A．To judge the effect of social interaction on memory and intelligence.

B．To find out what is real social interaction.

C．To learn how much time is needed for social interaction.

D．To show the function of people’s cognition.

小题4:Which of the following questions may be asked in the social interaction group in the experiment?

A．What does the author want to show us?

B．Do you like living in a big city or a small one?

C．Which word can be used to fill in the blank?

D．What is the main idea of the second paragraph?

小题5:What’s the main idea of the passage?

A．Intellectual exercises improve memory.

B．Different people have different ways of communication

C．Communicating with others keeps you healthy.

D．Social interaction makes you smart

Paragraph 1
Scientists have learned a lot about the kinds of food people need. They say that there are several kinds of food that people should eat every day. They are: (1) green and yellow vegetables of all kinds. (2) citrus(柑桔) fruits and tomatoes; (3) potatoes and other fruits and vegetables; (4) meat of all kinds, fish and eggs; (5) milk and foods made from milk; (6) bread or cereal(谷类), rice is also in this kind of food; (7) butter, or something like butter.
Paragraph 2
People in different countries and different places of the world eat different kinds of things. Foods are cooked and eaten in many different kinds of ways. People in different countries eat at different times of the day. In some places people eat once or twice a day; in other countries people eat three or four times a day. Scientists say that none of the differences is really important. It doesn’t matter whether foods are eaten raw or cooked, canned or frozen. It doesn’t matter if a person eats dinner at 4 o’clock in the afternoon or at eleven o’clock at night. The important thing is what you eat every day.
Paragraph 3
There are two problems, then, in feeding the large number of people on earth. The first is to find some ways to feed the world’s population so that no one is hungry.The second is to make sure that people everywhere have the right kinds of food to make them grow to be strong and healthy.
小题1:According to the scientists, which of the following groups of food is the healthiest for your lunch?

A．chicken, apples, cereal, cabbages	B．potatoes, carrots, rice, bread
C．oranges, bananas, fish, tomatoes	D．beef, pork, fish, milk

小题2:It is important for people to eat _______.

A．three times a day	B．dinner at twelve o’clock
C．cooked food all the day	D．something from each of the seven kinds of food every day

小题3:People in different countries and different places of the world _______.

A．has the right kinds of food to eat	B．cooks their food in the same way
C．has their meals at the same time	D．eat food in different ways

小题4:If there is Paragraph 4, what do you think is going to be talked about?

A．When people eat their lunch	B．What to do with the two problems
C．How to cook food in different ways	D．Why people eat different kinds of food

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