题目内容
第二篇 Moods, say the experts, are emotions that tend to become fixed, influencing one’s outlook for hours, days or even weeks. That’s great if your mood is a pleasant one, but a problem if you are sad, anxious, angry or simply lonely. Perhaps the best way to deal with such moods is to talk them out; sometimes, though, there is no one to listen. Modern pharmacology(药理学)offers an abundance of tranquilizers(安眠药), anti-depressants and anti-anxiety drugs. What many people don’t realize, however, is that scientists have discovered the effectiveness of several non-drug approaches to make you loose from an unwanted mood. These can be just as useful as drugs, and have the added benefit of being non-poisonous. So next time you feel out of sorts, don’t head for the drug-store, try the following approach. Of all the mood-altering self-help techniques, aerobic(增氧健身的)exercise seems to be the most efficient cure for a had mood. "If you could keep the exercise, you’d be in high spirits," says Kathryn Lance, author of Running for Health and Beauty. Researchers have explained biochemical and various other changes that make exercise compare favorably to drugs as a mood-raiser. Physical exertion such as housework, however, does little. The key is aerobic exercise--running, cycling, walking, swimming or other repetitive and sustained activities that boost the heart rate, increase circulation and improve the body’s utilization of oxygen. Do them for at least 20 minutes a session, three to five times a week. What is the main subject of the passage
查看答案
搜索结果不匹配？点我反馈
更多问题
阅读下面这篇短文，短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为规定段每段选择1个正确的小标题；(2)第27～30题要求从所给的6个选项中选择4个正确选项，分别完成每个句子。1. Psychologist George Spilich and colleagues at Washington College in Chestertown, Maryland, decided to find out whether, as many smoker say, smoking helps them "think and concentrate." Spilich put young non-smokers, active smokers and smokers deprived(被剥夺)of cigarettes through a series of tests. 2. In the first test, each subject(试验对象)sat before a computer screen and pressed a key as soon as he or she recognized a target letter among a grouping of 96. In this simple test, smokers, deprived smokers and non-smokers performed equally well. 3. The next test was more complex, requiring all to see sequences of 20 identical letters and respond the instant one of the letters transformed into a different one. Nonsmokers were faster, but under the stimulation of nicotine(尼古丁), active smokers were faster than deprived smokers. 4. In the third test of short-term memory, non-smokers made the fewest errors, but deprived smokers committed fewer errors than active smokers. 5. The fourth test required people to read a passage, then answer questions about it, Non-smokers remembered 19 percent more of the most important information than active smokers, and deprived smokers bested those who had smoked a cigarette just before testing. Active smokers tended not only to have poorer memories but also had trouble separating important information from insignificant details. 6. "As our tests became more complex." Sums up Spilich, "non--smokers performed better than smokers by wider and wider margins." He predicts, "smokers might perform adequately at many jobs--until they got complicated. A smoking airline pilot could fly adequately if no problems arose, but if something went wrong, smoking might damage his mental capacity." Para 1 ______.
下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。第一篇 The world is known to us through many senses, not just hearing, smell, vision, and at close range, touch and taste. Our skins let us know whether the air is moist or dry, whether surfaces are wet without being sticky or slippery. From the uniformity of slight pressure, we can be aware how deeply a finger is thrust into water at body temperature, even if the finger is enclosed in a rubber glove that keeps the skin completely dry. Many other animals, with highly sensitive skins, appear to be able to learn still more about their environment. Often they do so without employing any of the five senses. By observing the capabilities of other members of the animal kingdom, we come to realize that a human being has far more possibilities than are utilized. We neglect ever so many of our senses in concentrating on the five major ones. At the same time, a comparison between animals and man draws attention to the limitations of each sense. The part of the spectrum(光谱)seen by color-conscious man as red is non-existent for honey-bees. But a bee can see far more in flowers than we, because the ultra-violet(紫外线)to which our eyes are blind is a stimulating(刺激的)part of the insect’s spectrum, and, for honeybees at least, constitutes a separate color. What is the main idea of the passage
第三篇 Priscilla Ouchida’s "energy-efficient" house turned out to be a horrible dream. When she and her engineer husband married a few years ago, they built a ＄ 100,000, three--bedroom home in California. Tightly sealed to prevent air leaks, the house was equipped with small double-parted (双层玻璃) windows and several other energy-saving features. Problems began as soon as the couple moved in, however. Priscilla’s eyes burned. Her throat was constantly dry. She suffered from headaches and could hardly sleep. It was as though she had suddenly developed a strange illness. Experts finally traced the cause of her illness. The level of formaldehyde(甲醛)gas in her kitchen was twice the maximum allowed by federal standards for chemical workers. The source of the gas Her new kitchen cabinets and wall-to-wall carpeting. The Ouchidas are victims of indoor air pollution, which is not given sufficient attention partly because of the nation’s drive to save energy. The problem itself isn’t new. "The indoor environment was dirty long before energy conservation came along." Says Moschandreas, a pollution scientist at Geomet Technologies in Maryland. "Energy con- servation has tended to accentuate the situation in some cases." The problem appears to be more troublesome in newly constructed homes rather than old ones. Back in the days when energy was cheap, home builders didn’t worry much about unsealed cracks. Because of such leaks, the air in an average home was replaced by fresh outdoor air about once an hour. As a result, pollutants generated in most households seldom built up to dangerous levels. What made the Ouchidas’ new house a horrible dream
消心痛又称
微信支付 
支付宝支付