阅读理解　For three decades we''ve heard endlessly about the virtues of aerobic (increasing oxygen consumption) exercise. Medical authorities have praised running and jumping as the key to good health, and millions of Americans have taken to the treadmill(踏车) to reap the rewards. But the story is changing. Everyone from the American Heart Association to the surgeon general''s office has recently embraced strength training as a complement to aerobics. And as weight lifting has gone mainstream, so has the once obscure practice known as "Super Slow" training. Enthusiasts claim that by pumping iron at a snail''s pace-making each "rep"(repeat) last 14 seconds instead of the usual seven-you can safely place extraordinary demands on your muscles, and call forth an extraordinary response. Slow lifting may not be the only exercise you need, as some advocates believe, but the benefits are often dramatic. 　　Almost anyone can handle this routine. The only requirements are complete focus and a tolerance for deep muscular burn. Fox each exercise-leg press, bench press, shoulder press and so on-you set the machine to provide only moderate resistance. But as you draw out each rep, depriving yourself of impetus, the weight soon feels unbearable. Defying the impulse to stop, you keep going until you can''t complete a rep. Then you sustain your vain effort for 10 more seconds while the weight sinks gradually toward its cradle. Intense? Uncomfortable? Totally. But once you embrace muscle failure as the goal of the workout, it can become almost pleasure. 　　The goal is not to burn calories while you''re exercising but to make your body burn them all the time. Running a few miles many make you sweat, but it expends only 100 calories per mile, and it doesn''t stimulate much bone or muscle development. Strength training doesn''t burn many calories, either. But when you push a muscle to failure, you set off a pour of physiological changes. As the muscle recovers over several days, it will thicken-and the new muscle tissue will demand sustenance. By the time you add three pounds of muscle, your body requires an extra 9,000 calories a month just to break even. Hold your diet steady and, very quickly, you are vaporizing body fat. 　　One might have benefited from any strength-training program. But advocates insist the slow technique is safer and more effective than traditional methods.

单选题 Many Americans have taken to treadmill for years by virtue of

【正确答案】 D

【答案解析】分析题干可知，此题是考查对第一段第2句的理解。该句后一分句表明，美国人喜欢练treadmill是要reap the rewards(得到报偿，即有益于健康)。D项的 the exercise指“踩踏车”这项运动，符合句意和逻辑。A、B两项中的its应指treadmill，它本身只是一种器械，不会有awards(奖赏)，也不可能“消耗更多氧气”。C项compliment(赞扬)在原文句中指的是running and jumping，而非treadmill。故此三项皆不可取。

单选题 According to the author," Super Slow" training

【正确答案】 B

【答案解析】题干中的“Super Slow”training(“超慢速”锻炼)见于第一段第4句。该句说，同举重运动一样，一度obscure(not well-known不著名的，默默无闻的)，名为“超慢速”锻炼的运动，也已成为mainstream(dominant trend主流)。据此，B项说法最恰当。A项中的misunderstood是对obscure的有意曲解。C项的the basis of weight lifting (举重运动的基础)文中未说。D项之the nucleus of aerobics(增氧健身运动的核心)言过其实，文中只说strength training(力量锻炼)是a complement to aerobics(增氧健身运动的一项补充)。

单选题 The phrase "to break even" ( Line 7, Par. 3 ) most probably means

单选题 In practicing slow lifting, one has to

【正确答案】 C

【答案解析】slow lifting(慢速举重)出现在第一段末两句。第二段作了进一步描述。其中说，by pumping iron at a snail''s pace(以极慢的速度提拉铁片/砣)，你就能安全地给自己的muscles(肌肉)增加非同寻常的压力。这样做的要求是全神贯注，和 tolerance for deep muscular burn(忍耐深切的肌肉扎痛/火辣感)。据此可知，C项说法正确。A项demands for不同于文中的demands on，前者表示“所需求之物”，后者意为“对……的要求”。B项的unendurable reaction(无法忍受的反应)言过其实，不合文意。 D项说的是举重锻炼的不同方式和部位。文中的bench press意为“(仰卧于长凳上)杠铃推举锻炼”。