题目内容
In our country the cold weather in the north_____ sharply _____the hot weather in the south.
| A．combines；with | B．relates；to | C．compares；with | D．contrasts；with |
D
解析
名校课堂系列答案One of the most widely accepted, commonly repeated assumptions (假设) in our culture is that if you exercise, you will lose weight. I exercise all the time, but I still have gut fat that hangs over my belt when I sit. Why isn’t all the exercise getting rid of it?
It’s a question many of us could ask. More than 45 million Americans now belong to a health club, up from 23 million in 1993. We spend some $19 billion a year on gym memberships. Of course, some people join and never go. Still, as one major study — the Minnesota Heart Survey — found, more of us at least say we exercise regularly.
And yet obesity (肥胖) figures have risen sharply in the same period: a third of Americans are obese, and another third count as overweight by the Federal Government’s definition. Yes, it’s entirely possible that those of us who regularly go to the gym would weigh even more if we exercised less. But like many other people, I get hungry after I exercise, so I often eat more on the days I work out than on the days I don’t. Could exercise actually be keeping me from losing weight?
The popular belief that exercise is essential for weight control is actually fairly new. As recently as the 1960s, doctors routinely advised against too much exercise, particularly for older adults who could injure themselves. Today doctors encourage even their oldest patients to exercise, which is sound advice for many reasons: People who regularly exercise are at significantly lower risk for all manner of diseases — those of the heart in particular. They less often develop cancer and many other illnesses. But the past few years of obesity research show that the role of exercise in weight loss has been wildly over-evaluated.
“In general, for weight loss, exercise is pretty useless,” says Eric Ravussin, exercise researcher at Louisiana State University. Many recent studies have found that exercise isn’t as important in helping people lose weight as you hear so regularly in gym advertisements or on shows like The Biggest Loser — or, for that matter, from magazines like this one.
The basic problem is that while it’s true that exercise burns calories and that you must burn calories to lose weight, exercise has another effect: it can make one hungry. That causes us to eat more, which in turn can negate (使无效) the weight-loss benefits we just gained. Exercise, in other words, isn’t necessarily helping us lose weight. It may even be making it harder.
【小题1】 From the passage we learn that ____.
| A．some Americans join a health club but never go there |
| B．the number of overweight people has doubled since 1993 |
| C．more than 45 million Americans now go to the gym regularly |
| D．Americans waste too much money each year on sports |
A．has long been believed to be good for older adults |
| B．is not properly advertised as an effective way to lose weight |
| C．was first recognized as an effective way to lose weight in the 1960s |
| D．is less effective in preventing heart disease than what doctors believe |
| A．they have the habit of going to the gym regularly |
| B．they eat the same food when they do not exercise |
| C．they exercise less than required by doctors |
| D．they eat more after they exercise |
| A．Overweight Is Not Good for Your Health |
| B．Exercise Won’t Make You Thin |
| C．Gym Is Part of American Lifestyle |
| D．Obesity Is a Social Problem in America |
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Have you ever intended to be fully absorbed in your work but found yourself distracted by e-mail, the Internet and other things throughout the day?
"People often lose their concentration when they are bored, of course, but also when they are engaged in challenging tasks," says Peter Bregman. "They sometimes have a feeling to escape from what's difficult or boring, so they jump out," he says. The part of the brain devoted to attention is connected to the brain's emotional center. Any strong emotion—quarrels with colleagues, problems at home—can interrupt our attention. Studies over the last decade have shown that too much work to do at a time can easily lead to distraction.
Refocusing is hard for many people. Robert Epstein suggests the following, "Stop and listen to music for a few minutes. Go for a short walk or take a deep breath, where you breathe in deeply, count to five slowly, hold it and breathe out very slowly." This can "blow out all the tension and the unwanted in your mind to restore your focus."
Take more control by structuring your time and becoming more aware of your behaviors. "Setting the phone alarm to go off every hour is my way of creating awareness," Mr. Bregman says," You have to inform yourself that you've lost focus in order to do something about it." Starting the day with a to-do list is important, such as when to eat, when to go to the gym or take a walk. But if it's overly ambitious, you will put yourself in a state of anxiety, which makes it hard for the brain to concentrate. "Choosing three or four things as your priority for the day allows your brain to settle down and focus," he says.
|
Topic |
How to become more 1. ________ on the work? |
|
2._______ of getting distracted |
People tend to get away from things that they're3._____ up with. Strong 4. _________ affect the brain' s part for attention. People get distracted easily if5.__________ multitasks at a time. |
|
6.______ of strong emotions |
having a 7.___________ with a colleague. meeting with problems at home |
|
Tips on holding attention |
Stop working to restore your focus by 8. _______ your breath and try different relaxing things. 9._________ your time effectively and create awareness of your behaviors. Make a to-do list at the beginning of a working day. Focus on 3 or 4 things and get them done 10._______ for the day. |