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风湿性心脏病二尖瓣狭窄最常见的并发症是（）
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忝列门墙tiǎn liâ mãn qiáng
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抗癫痫药的应用不正确的是（）
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关于Windows任务栏，下列说法不正确的是（）。
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1996年，段锦川导演的（），把镜头对准拉萨的一个居委会，以冷眼旁观的手法进行拍摄，捕捉到了隐藏在日常生活中的具有震撼力的东西。
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根据《房地产开发企业资质管理规定》，下列属于一级房地产开发企业资质的条件有()。
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可将促销规模减至最低限度的产品生命期是（）。
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十七世纪是以欧洲（）为主的探险阶段。
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Questions 26 to 30 are based on the following passage. Exercise is one of the few factors with a positive role in long-term maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to “light” beer and low-calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet. In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts: for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry (小甜饼). Even exercise professionals concede half a point here. “Exercise by itself is a very tough way to lose weight,” says York Onnen, program director of the President’s Council on Physical Fitness and Sports. Still, exercise’s supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight. If you have been sedentary (极少活动的) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year’s time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight. Some people dislike exercise because （）
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走合保养期间，车辆必须加载20%-25%。