There are new findings that not enough sleep may cause people to gain weight. Researchers say a lack of sleep can produce hormonal(激素的) changes that increase feelings of hunger.
In one study, researchers in the United States examined information on more than 1000 people. The people had taken part in a long-term study of sleep disorders.
Some people slept less than five hours a night. They had 15 percent higher blood levels of a hormone called ghrelin than people who slept eight hours. And they had 15 percent less of the hormone leptin. Experts say ghrelin helps make people feel hungry; leptin makes you feel full.
The scientists say these hormonal changes may be a cause of obesity in Western societies. They note the combination that sleep limitation is common and food is widely available.
The results were not affected by how much people exercised. People who are awake longer have more time to burn energy. But the researchers say loss of sleep may increase hunger especially for high-calorie foods, so people gain weight. It seems that, for survival, the body may be designed to store more fat during times with less sleep.
Researchers from Stanford University in California and the University of Wisconsin did the study. They found that the best amount of sleep for weight control is 7.7 hours a night.The Public Library of Science published the findings in its journal Medicine . Internet users can read the full study, free of charge, at plos. org.Not enough sleep can cause obesity by ______.
| A．burning more of your energy |
| B．making you want to eat more food |
| C．keeping you from doing exercise |
| D．helping you feel great without food |
When you sleep 7.7 hours a night, you will ______ .
| A．have your ghrelin level rise and leptin level drop |
| B．have your leptin level rise and ghrelin level drop |
| C．have your ghretin and leptin levels properly balanced |
| D．have your hunger increase and your weight decrease |
You can read the findings________
| A．Only on the Internet |
| B．only in Medicine |
| C．Both on the Internet and in Medicine |
| D．Neither on the Internet nor in Medicine |
College visits are important．Before you commit years of your life and money to a school, be sure you're choosing a place," that is a good match for your personality and interests．You can’t get the "feel' of a school from any guidebook, so be sure to visit the campus．Below are a few tips for getting the most out of your college visit．
1.Explore on your own
Of course you should take the official campus tour, but be sure to allow time to hang around on your own． The trained tour guides will show you a school's selling points．But the 1dest and prettiest buildings don't give you the entire picture of a college．Try to walk the extra mile and get the complete picture of the campus．
2.Read the Bulletin Boards
When you visit the student center, academic buildings and residence hall, take a few minutes to read the bulletin boards．They provide an easy way to see what's happening on campus．The ads for lectures, clubs and plays can tell you what's going on outside the classrooms．
3.Eat in the Dining Hall
You can get a good feel for student life by eating in the dining hall．Try to sit with students if you can．Do the students seem happy or stressed? Also, is the food good? Are there adequate healthy options? Many admission offices will give prospective students coupons（优惠券）for free meals in the dining halls．
4.Visit a Class in Your Major
If you know what you want to study, a class visit makes a lot of sense．You'll get to observe other students in your field and see how involved they are in classroom discussion．Try to stay after class for a few minutes and chat with the students to get their impressions of their professors and major．Be sure to call in advance to schedule a classroom visit—most colleges don't allow visitors to drop in on class unannounced．
5．Talk to Lots of Students
Your campus tour guide has been trained to market the sch001．Try to talk to students who aren't getting paid to impress you．These important conversations can often provide you with information about co1lege life that isn't part of the admission script．Few university officials wi11 tell you if their students spend all weekend drinking or studying, but a group of random(随机的，随意的) students might.
For more tips，please go to collegeapps．about．com．The best way to know about a college in an official campus tour is____．
| A．to walk around the campus alone |
| B．to take pictures of the campus |
| C．to visit the oldest and prettiest buildings |
| D．to hire a tour guide |
Reading the bulletin boards can help you___________.
| A．decide the major you want to study |
| B．find out the after-class activities on campus |
| C．get free coupons from the admission offices |
| D．find out the options of healthy food |
If you plan to attend a class on campus,___________.
| A．drop in on a class in your major |
| B．have talks with the students in the class |
| C．make an appointment in advance |
| D．ask how the students like their teachers and majors |
To get a real idea of the college during a visit, it's best to talk to______.
| A．famous professors | B．campus tour guides |
| C．admission officers | D．random students |
Where does the passage probably come from?
| A．A news report | B．A tourist poster． |
| C．An educational journal． | D．A geographical magazine． |
The nation's largest group of pediatricians(小儿科医生) on Monday urged its members to “firmly oppose boxing for any child or adolescent.”
In a statement, the American Academy of Pediatrics (AAP) said thousands of boys and girls take part in the sport in North America, despite risks of serious brain and facial injuries. The group’s position was approved by some experts.
“There is very little one can do in order to increase the chance of having a healthy brain when you get old,” said Dr. Hans Forstl, who has studied boxing injuries.
“ One of the best things you can do is avoid boxing.” He said.
According to the new statement, published in the journal Pediatrics, information from Canada shows a rise in boxing injuries over the past decade.
Pat Russo, a retired police officer who runs a boxing gym in Brooklyn, New York, said injuries are rare in amateur boxing. After 26 years and training thousands of kids, he has seen just one split lip among his students.
“ If the gym is run properly, injuries are at an absolute minimum,” Russo said. “Football is ten times more dangerous. While tennis or football might also help kids gain confidence, boxing holds a special attraction for children in poor neighborhoods, because it allows them to act tough while in trouble.”
Dr. Robert Cantu, a surgeon (外科医生) at Emerson Hospital in Concord, Massachusetts, said AAP’s attitude makes sense for upper-class and middle-class kids.
“ Clearly boxing is safer today than it was 20 or 30 years ago, but it is still a very risky activity,” he said.
“For kids in poor areas, however, the situation is different,” said Cantu. “ The most dangerous thing for the majority of people in boxing is just where they live. They are far safer in the ring (拳击场), even taking blows to the head, than they are out in the neighborhood.”The statement released by AAP was ___________.
| A．approved by Pat Russo |
| B．focused on professional boxing |
| C．based on Dr. Hans Forstl’s research |
| D．strongly against boxing for children |
What is Dr. Hans Forstl’s attitude towards boxing for children?
| A．Unconcerned | B．Supportive |
| C．Opposed | D．Neutral |
Pat Russo believes that boxing injuries are____________.
| A．still on the rise today |
| B．not a serious problem in his gym |
| C．not common in poor neighborhood |
| D．more dangerous than football injuries |
In the text, Dr. Robert Cantu expressed his concern about __________.
| A．brain injuries occurring in boxing matches |
| B．the development of boxing among children |
| C．the attitude of upper-class kids toward boxing |
| D．children’s security in poor neighborhood |
What is the text mainly about?
| A．The development of boxing gyms |
| B．Children’s risk of injury in boxing |
| C．The disadvantage of doing boxing |
| D．Measures to improve boxing safety |
Some time ago, I discovered that one of my chairs had a broken leg. I didn’t think there would be any difficulty in getting it mended, as there are a whole lot of antique shops near my home. So I left home one morning carrying the chair with me. I went into the first shop expecting a friendly reception. I was quite wrong. The man wouldn't even look at my chair.
The second shop, though slightly more polite, was just the same, and the third and the fourth —so I decided that my approach must be wrong.
I went into the fifth shop with a plan in my mind. I placed the chair on the floor and said to the shopkeeper, “Would you like to buy a chair?” He looked it over carefully and said, “Yes, not a bad chair. How much do you want for it, sir?” “Twenty pounds,” I said. “OK,” he said, “I’ll give you twenty pounds.” “It’s got a slightly broken leg,” I said. “Yes, I saw that; it's nothing.”
Everything was going according to plan and I was getting excited. “What will you do with it?” I asked. “Oh, it will be easy to sell once the repair is done.” “I'll buy it,” I said. “What do you mean？You’ve just sold it to me,” he said. “Yes, I know but I’ve changed my mind. I'm sorry; I'll give you twenty-seven pounds for it. ” “You must be crazy,” he said. Then, suddenly the penny dropped. “I know what you want. You want me to repair your chair. ” “You’re right,” I said. “And what would you have done if I had walked in and said, ‘Would you mend this chair for me?’” “I wouldn't have agreed to do it,” he said. “We don’t do repairs, not enough money in it and too much trouble. But I’ll mend this for you; shall we say for a fiver?” He was a very nice man and was greatly amusedby the whole thing.We can learn from the text that in the first shop the writer ________.
| A．was rather impolite |
| B．was warmly received |
| C．asked the shopkeeper to buy his chair |
| D．asked the shopkeeper to repair his chair |
The underlined word “approach” in the second paragraph means _____________.
| A．plan for dealing with thing |
| B．decision to sell things |
| C．idea of repairing things by himself |
| D．way of doing things |
The expression “ the penny dropped” in the last paragraph means the shopkeeper __________.
| A．changed his mind |
| B．accepted the offer |
| C．saw the writer’s purpose |
| D．decided to help the writer |
How much did the writer pay?
| A．£5 | B．£6 | C．£20 | D．£27 |
From the text, we can learn that the writer was____________.
| A．honest | B．careful |
| C．smart | D．funny |
Topic: “Enjoy Worldwide privileges with BOC cards” 5% cash rebate(折扣) from UnionPay credit card issued by Bank of China
Time: April 1, 2014 to February 28, 2015
Customer: Personal credit cards with card number starting with “62” and with the UnionPay logo on the card
Details：
Payments with business cards, corporate cards or transactions（交易）through third-party platform (PAYPAL, Alipay and the internet banking payment and Kuai payment supported by Alipay) are not eligible（合格的）for the promotion.
The promotion is applicable to online shopping payments to appointed business partners only, and all the transactions need to be completed via UnionPay online. Amazon (U.S.) personal credit cards with card number starting with “62” and with the UnionPay logo on the card are eligible for the promotion.
As the promotion has no pre-defined upper limit on the number of transactions, all transactions meeting the criteria above will enjoy the cash rebate. The value of eligible transactions will be the settlement amount in RMB according to the UnionPay system.
All single transactions of RMB 500 or more with payment made by UnionPay credit card issued by Bank of China (card number starting with ‘62’) via UnionPay online platform will enjoy a 5% cash rebate, capped at RMB 100 per card per month.
Cardholders will receive the cash rebate within 90 calendar days after every promotion period. If the cardholder has any questions on the amount of rebate, please contact Bank of China Credit Card Customer Care Hotline（4006695566）within 30 calendar days since receiving the rebate; if no question is raised within 30 calendar days, the bank with deem the client agreeable to the amount of rebate. The date of cash rebate arriving in client’s account could be later than the date described above due to force majeure that is not unforeseeable.
Only transactions made with specified credit cards to appointed business partners will be eligible for the cash rebate promotion; in case of refund, no cash rebate will be made. At the same time, Bank of China reserve the right to recall any unqualified cash rebate already made.
Cardholders will need to ensure no late payment, card freeze or other abnormal occasions during the promotion period, otherwise the cardholder will not be eligible for the promotion.
Income tax associated with the cash rebate will be taken care of by the cardholder. Cardholders hold the responsibility to declare the income and settle the tax payment.Which of the following cards can get the cash rebate?
How much rebate can I get from a 500 dollars payment?
| A．About 5RMB | B．About 25 RMB |
| C．About 100 RMB | D．About 125 RMB |
In which of the following payment can we get the cash rebate?
| A．$60 for a sweater on Amazon. |
| B．$100 for a souvenir bought in the duty-free shop of LAX. |
| C．$200 for a child safety seat on Amazon. |
| D．$80 for a bottle of wine from a shop in Paris. |
We can learn from the passage that ___________.
| A．The cash rebate will arrive in our account within 30 calendar days. |
| B．We can’t get the cash rebate unless we pay the income tax associated. |
| C．Both the customers and Amazon(U.S.) will benefit from this promotion. |
| D．Any transactions of RMB 500 or more can get the cash rebate. |
I don’t ever want to talk about being a woman scientist again. There was a time in my life when people asked constantly for stories about what it’s like to work in a field dominated by men. I was never very good at telling those stories because truthfully I never found them interesting. What I do find interesting is the origin of the universe, the shape of space-time and the nature of black holes.
At 19, when I began studying astrophysics, it did not bother me in the least to be the only woman in the classroom. But while earning my Ph.D. at MIT and then as a post-doctor doing space research, the issue started to bother me. My every achievement—jobs, research papers, awards—was viewed through the lens of gender (性别) politics. So were my failures. Sometimes, when I was pushed into an argument on left brain versus (相对于) right brain, or nature versus nurture (培育), I would instantly fight fiercely on my behalf and all womankind.
Then one day a few years ago, out of my mouth came a sentence that would eventually become my reply to any and all provocations: I don’t talk about that anymore. It took me 10 years to get back the confidence I had at 19 and to realize that I didn’t want to deal with gender issues. Why should curing sexism be yet another terrible burden on every female scientist? After all, I don’t study sociology or political theory.
Today I research and teach at Barnard, a women’s college in New York City. Recently, someone asked me how many of the 45 students in my class were women. You cannot imagine my satisfaction at being able to answer, 45. I know some of my students worry how they will manage their scientific research and a desire for children. And I don’t dismiss those concerns. Still, I don’t tell them “war” stories. Instead, I have given them this: the visual of their physics professor heavily pregnant doing physics experiments. And in turn they have given me the image of 45 women driven by a love of science. And that’s a sight worth talking about.Why doesn’t the author want to talk about being a woman scientist again?
| A．She feels unhappy working in male-dominated fields. |
| B．She is fed up with the issue of gender discrimination. |
| C．She is not good at telling stories of the kind. |
| D．She finds space research more important |
From Paragraph 2, we can infer that people would owe the author’s failures to _____.
| A．the very fact that she is a woman |
| B．her involvement in gender politics |
| C．her over-confidence as a female astrophysicist |
| D．the burden she bears in a male-dominated society |
Why does the author feel great satisfaction when talking about her class?
| A．Female students no longer have to bother about gender issues. |
| B．Her students’ performance has brought back her confidence. |
| C．Her female students can do just as well as male students. |
| D．More female students are pursuing science than before. |
What does the image the author presents to her students suggest?
| A．Women students needn’t have the concerns of her generation. |
| B．Women have more barriers on their way to academic success. |
| C．Women can balance a career in science and having a family. |
| D．Women now have fewer problems pursuing a science career. |