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Which of the following can best replace "blend" in "Universities had promised a blend of online and face -to-face teaching..." ?
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[音频]Mood, say the experts, are emotions that tend to become fixed, 1)an influence on one's outlook for hours, days or even weeks. That's 2)if your mood is a pleasant one,but it will be a problem if you are sad, anxious,angry or lonely.Perhaps one of the best ways to deal with such moods is to 3). Sometimes, though,there is no one to listen.Modern science offers an abundance of drugs to deal with bad moods. But scientists have also discovered the practicability of several non-drug 4)to release you from an unwantedmood. These can be just as useful as drugs, and have the added benefit of being healthier. So, the next time you feel out of sorts, don't 5)the drug store - try the following approach. Of all the mood-altering self-help techniques, physical exercise seems to be the most 6)cure for a bad mood. "If you could keep up the exercise, you'd be in high spirits," says Kathryn Lance, author of Running for Health and Beauty. Obviously, physical activity 7) mood changes.Researchers have explained biochemical andvarious other changes that make exercise8) drugs as a mood-raiser. Physical exertion such as housework,however, does little help, probably because it is not intensive enough, and people usually do it unwillingly. The key is physical exercise -running, cycling, walking, swimming or other sustained activities that 9) the heart rate, increase circulation and improve the body's use of oxygen. Do them for at least 20 minutes a10) , three to five times a week.
何谓适度原理?为什么说适度原理是管理实践中艺术地运用科学的管理理论与方法的具体体现?
应用构造函数创建一个自定义对象,通过自定义对象生成指定行数、列数的表格。提交代码和结果截图
混凝土的抗压强度是指在标准养护条件下( ):
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