8.  What can you infer from the text ?

A. To keep from being overweight, people have to eat nofat food

B. The calories from fat just do it a little quicker than from protein and carbohydrates

C. People should avoid temptation

D. Americans realize that it is necessary to count calories before eating the food

第4天                  A

Asian athletes have had a spare time in the first two days of the World Indoor Championships in Birmingham, England. But Chinese hurdler(跨栏运动员) Liu Xiang surprised everyone by taking the bronze medal in the men's 60-meter hurdles.

Liu became the first Chinese male athlete to get a world indoor medal in the 18-year history of the championship and was the only Asian medallist this time. 

"Karaoke (卡拉OK)! That's what I'm going to do. I'm going to get a big group of my friends together and sing. I love both Western and Chinese music but especially Michael Jackson," said Liu after clocking 7.52 seconds in the final to take his place on the podium (领奖台).

"Frankly speaking, I didn't think I was in the shape to win a medal," Liu said. "On my arrival here, my aim was just to fight my way into the final. After I did that, I thought I might just get into the top six. I knew British hurdler Colin Jackson was going to be here and he's the world record holder indoors and out."

"There was also Cuba's reigning (统治的) Olympic champion Anier Garcia and Allen Johnson, from the United States." It was Johnson, the reigning world outdoor champion, who was successful in 7.47 seconds with Garcia second and Jackson finished back in fifth. 

Now Liu will never underestimate his chances again and is aiming for glory in Paris later this year.

"There is the World Championship outdoors in the summer and I have now got to think that I can get a medal. I can never again think that I can't get a medal," he said. Liu's success here marks his rapid transition into the senior ranks.

"The university gives me a lot of flexibility. My courses are very easy and the teachers are very helpful," said Liu.

They might have to be even more accommodating(乐于助人的) now if Liu starts taking on celebrity status, although an invite to his homecoming karaoke party may help.

4. According to the text, which of the following is NOT true?

A. Having influential friends or right background seems helpful sometimes.

B. The engineer had good reason to overcharge the factory owner.

C. Not all those who are good in their jobs have the chance to be promoted.

D. Those who are good in their jobs are still largely needed by the modern society.

B

Even as Americans have been gaining weight, they have cut their average fat intake from 36 to 34 percent of their total diets in the past 15 years.  And indeed,  cutting fat  to control or lose weight makes sense. Fat has nine calories per gram. Protein and carbohydrates(碳水化合物) have just four. Moreover, the body uses fewer calories to metabolize fat than it does to metabolize other foods. Compared with protein and carbohydrates - which break down into amino acids and simple sugars, respectively, and can be used to strengthen and energize the body -- dietary fat is more easily converted to body fat. Therefore, it’s more likely to stay on buttocks, thighs and bellies. 

But cutting fat from your diet doesn’t necessarily mean your body won’t store fat. For example, between nonfat and regular cookies, there’s trivial difference in calories because manufacturers make up for the loss of fat by adding sugar. Low-fat crackers, soups and dressings can also be just as high in calories as richer versions. No matter where the calories come from, overeating will still cause weight again. The calories from fat just do it a little quicker. A Wisconsin computer programmer who decided with a diet coach to eat only 40 grams of fat a day learned the lesson firsthand. He wasn’t losing weight. Then he showed his food diary to his coach and revealed he’d been eating half a pound of jelly beans a day. “They don’t have any fat,” he explains. But they had enough sugar to keep him from shedding an ounce.  

Nonfat foods become add-on foods. When we add them to our diet, we actually increase the number of calories we eat per day and gain weight. That was borne out in a Pennsylvania State University study. For breakfast, Prof. Barbara Rolls gave two groups of women yogurt(酵母乳) that contained exactly the same amount of calories. One group’s yogurt label said “high fat”-the other, “low fat.” The “low fat” yogurt group ate significantly more calories later in the day than the other group. “People think they’ve saved fat and can indulge themselves later in the day with no adverse consequences,” says Richard Mattes, a nutrition researcher at Purdue University. “But when they do that, they don’t compensate very precisely, and they often end up overdoing it.”

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