CWehavedevelopedanewrangeoffir-优题课

Two new studies suggest that modern running shoes could increase the risk of injuries to runners.
One study involved sixty-eight healthy young women and men who ran at least twenty-four kilometers a week. The runners were observed on a treadmill machine (跑步机). Sometimes they wore running shoes. Other times they ran barefoot (赤脚).
Researchers from the JKM Technologies Company in Virginia, the University of Virginia and the University of Colorado did the study.
They found that running shoes create more stress that could damage knees, hips and ankle joints than running barefoot. They observed that the effect was even greater than the effect reported earlier for walking in high heels.
The study appeared in the official scientific journal of The American Academy of Physical Medicine.
The other study appeared in the journal Nature. It compared runners in the United States and Kenya. The researchers were from Harvard University in Massachusetts, Moi University in Kenya and the University of Glasgow in Scotland.
They divided the runners into three groups. One group had always run shoeless. Another group had always run with shoes. And the third group had changed to shoeless running.
Runners who wear shoes usually come down heel first. That puts great force on the back of the foot. But the study found that barefoot runners generally land on the front or middle of their foot. That way they ease into their landing and avoid striking their heel.
Harvard’s Daniel Lieberman led the study. He says the way most running shoes are designed may explain why those who wear them land on their heels. The heel of the shoe is bigger and heavier than other parts of the shoe, so it would seem more likely to come down first. Also, the heel generally has thick material under it to soften landings.
But the researchers do not suggest that runners immediately start running barefoot. They say it takes some training. And there can be risks, like running when your feet are too cold to feel if you get injured.
The study was partly supported by Vibram, which makes a kind of footwear that it says is like running barefoot. The findings have gotten a lot of attention. But the researchers say there are many problems in the way the press has reported in their paper. So they have tried to explain their findings on a Harvard Website.
What’s the main idea of the passage?

A．Walking in high heels could cause less serious effects than running barefoot.

B．Two new discoveries encourage people to run in high heels.

C．Running in shoes is partly good to runners.

D．Two new studies prove running without shoes is beneficial to runners in most cases.

Which part of our body could be injured if we run in running shoes?

A．Toes.	B．Hips.
C．Feet.	D．Legs.

What can we learn from the passage?

A．The way that we run by landing on the front or middle of our foot could avoid damaging our heel.

B．We should start running barefoot in no time.

C．Running in modern running shoes could cause more serious effects than running in high heels.

D．We won’t be injured if we run barefoot.

Are you reading this while sitting in an office cubicle（办公室格子间）? If so, please take a moment and glance around you. Are there photos of your last vacation hung on the wall? One of your kid’s drawings? A yellowed print of a favorite cartoon?
If so, you are doing something good for both yourself and your organization. Newly published research suggests working in an environment that offers little privacy can lead to emotional exhaustion and burnout（过度疲劳）. But personalizing one’s workplace is an effective protection against such unwanted outcomes.
“Individuals may take comfort from the items with which they surround themselves at work, and these items may help employees to keep emotional energy high in the face of stresses that come from their work,” writes a research team led by Gregory Laurence of the University of Michigan-Flint, Michigan, in north central U.S.
In the Journal of Environmental Psychology, Laurence and his colleagues describe a study featuring 87 white-collar employees at a large, urban university in the Midwestern United States.
Research assistants noted whether they worked in a private office (with a door that can be closed) or a cubicle. They also counted the number of items each worker had brought from home to decorate his or her workspace – a list that included photographs, posters, artworks.
Not surprisingly, Laurence and his colleagues found a connection between the amount of privacy an employee enjoys and his or her rate of burnout. “High privacy conditions tend to serve as strong protectors against unwelcome interferences and distractions（干扰和分心的事）,” they noted, “contributing to a work environment supporting reduced emotional exhaustion.”
But this link disappeared when those employees had personalized their cubicles. Employees who had turned their workspaces into areas that reflect their interests and personalities reported the same (relatively low) level of emotional exhaustion, no matter whether they worked in an office or a cubicle.
The research confirms “the calming effect” of having your own stuff around you. So if you’re feeling exhausted at work, relief could be as simple as hanging a few of your kindergartener’s colorful creations on your cubicle wall.
Who might be most interested in the passage?

A．Job hunters.

B．Office workers.

C．Kid’s parents

D．Employment researchers.

For employees, decorating cubicles with their own items __________.

A．offers them little privacy

B．may help improve their work efficiency

C．will sometimes cause burnout

D．serve as interferences and distractions

The participant of the research __________.

A．come from the university of Michigan-Flint

B．all suffer high levels of emotional exhaustion

C．may work in a private office or in a cubicle

D．like personalizing their homes with little items

Where does this passage probably come from?

A．A book review	B．A research plan
C．An official document	D．A news report

50 years ago Barbie Millicent Roberts first appeared in the world of toys. Barbie, as everyone called her, has become the most successful toy in history. According to Barbie’s parents, the Mattel Company, 90% of all American girls between 3 and 10 have at least one Barbie at home.
In today’s world, however, Barbie is facing an identity crisis. There are many rivals on the market. For example, Bratz dolls, which are very popular among older girls, came to life seven years ago. They look more like today’s pop stars with heavy make-up（浓妆）and fashionable miniskirts. Today Bratz is a challenge for Barbie, because the company offers a wide variety of clothing, too.
It seems that Barbie has lost her appeal to older girls. “For younger girls playing with a Barbie is much fun, but when you get older you want something chic, says Alina Foley, a shop assistant in a New York toy store. Indeed, sales have been going down over the past year, partly because of the world’s economic crisis.
Barbie still has a lot going for her. More and more doll lovers all over the globe have become collectors. They trade Barbies or buy them on eBay. Others look for special and rare Barbie dolls, like Scarlett O’Hara from “Gone with the Wind”.
On the international market, Barbie remains number one. Although Mattel has been selling fewer Barbies in the United States over the past year, sales in other countries have been going up. In January Mattel opened its first Barbie store in Shanghai, where girls can shop, eat or even become their own fashion designer.
Barbie has changed her image many times over the past decades. Originally she worn blond pony tails and had bright red lips. In the 80s she changed to a more colorful new look.
For her 50th birthday Mattel is planning some big events. Fashion designers from all over the world have been called to make new clothes for Barbie. She is also scheduled to be a big star during the New York Fashion Week.
How long will Barbie stay on as a celebrity（名人）in the world of toy dolls? Hard to say, but 50 is definitely not the age to retire.
The author mentions Bratz in Paragraph 2 in order to show that __________.

A．even pop stars have their own favorite toy dolls

B．Barbie is facing tough competition on the market

C．clothing plays the key role in the design of toy dolls

D．the toy market has been expanding greatly over the years

The underlined word “chic” in Paragraph 3 probably means “__________”.

A．valuable	B．scientific
C．complex	D．fashionable

We can learn from the text that Barbie __________.

A．plays a role in a film directed by Scarlett O’Hara

B．is most popular with girls under the age of ten

C．has rarely changed its image since its birth 50 years ago

D．has long lost its leading position on the market of toy dolls

What would be the best title for the text?

A．Barbie Turns Fifty

B．Hottest Toys for Girls

C．Mattel’s Barbie Sales

D．Play with Bratz Toys

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 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.
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

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

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.

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.

After moving to the United States, immigrant groups trying to fit in tend to choose high-calorie, fatty foods in an attempt to appear more American, a new study finds. That's one reason why immigrants approach U.S. levels of obesity within 15 years of moving to America.
The researchers also did an experiment that measured whether or not the threat of appearing un-American influenced respondents' food choices．After being questioned about their ability to speak English，75percentof Asian-Americans identified a typical American food as their favorite. Only 25 percent of Asian-Americans who had not been asked if they spoke English did the same.
When their American identity was called into question during a follow-up study, Asian-American participants also tended to choose typical American dishes, such as hamburgers and grilled cheese sandwiches, over more Asian fare. In that experiment, 55 Asian-Americans were asked to choose a meal from a local Asian or American restaurant. Some participants were told that only Americans could participate in the study. Those who chose the more typical American fare ended up consuming an extra 182 calories, including 12 grams of fat and seven grams of saturated fat(饱和脂肪).
"People who feel like they need to prove they belong in a culture will change their habits in an attempt to fit in," said Sapna Cheryan, an author of the study and assistant professor of psychology at the University of Washington. "If immigrants and their children choose unhealthy American foods over healthier traditional foods across their lives, this process of fitting in could lead to poorer health," Cheryan added.
Social pressures, the study concluded, are at the heart of the problem. "In American society today, being American is associated with being white. Americans who don't fit this image even if they were born here and speak English feel that pressure to prove that they're American," said Cheryan.
According to the survey, _____.

A．Asia-Americans care less about their health.

B．25 percent of Americans like junk food.

C．choosing food is related to Asian-American’s situation

D．immigrants are forced to eat junk food.

The underlined word “fare” in Paragraph 3 most probably means “_____”

A．food offered as a meal	B．a person taking a taxi
C．money spent on food	D．an arranged thing to do

According to Sauna Cheryan, ________.

A．what immigrants have done is ridiculous

B．American traditional foods are healthier

C．immigrants risk their health in order to fit in

D．American culture affects immigrants deeply

Which of the following should take the blame for the bad eating habit?

A．The situation of employment	B．The traditional culture
C．The American government	D．The pressures from society