【正文】 unwanted inches leave your waist. Americans spend tens of million of dollars on various products to firm up their fat around the waist.And did they work? Not necessarily. Independent studies have concluded that most of these productsno matter who approved them or how expensive they areshape your midsection no better than oldfashioned stomach crunches（仰臥起坐）. Some can even cause injurylike the $ Body ShaperQ8SP, which left electrical burns on some researchers at the University of Wisconsin, La Crosse. Others, like the popular AbDoer, trpically burn less energy than a gentle walk, according to a study to be published in September by the American Council on Exercise.The fact is that many Americans don’t have the biological makeup to develop an obvious abdominal muscles. They are either unable to get the necessary muscle mass or they can’t lose enough fat to make a difference. Even if the underlying muscles are well developed, and it takes to hide it is onesixteenth of tan inch of fat. That’s enough to dismiss most healthy women as well as plenty of guys who do crunches every day.So what works best? In its new study, the exercise experts researched on the results of the popular AbDoer. A lengthy TV advertisement promises that just 10 minutes a day performing such movements as “Body Boogies” and “Good Mornings” will “help form those muscles the fun and easy way without diets.” Steven Loy, professor at California State University, Northridge, tested the promise by measuring the electrical activity produced by the abdominal muscles during three AbDoer movements. He and his colleagues then pared the results with those produced during traditional exercises. They determined that the muscles were no more active, and in some cases less so, when exercisers were using the AbDoer.Taking a broader approach, researchers at San Diego State University pared 13 abdominal exercises for their ability to develop the central abdominal muscles. They concluded, in a report published in May, that the most effective exercises kept turning the body and worked the muscles the entire time. Among the winners: the bicycle movementsso called because it looks as if you are riding a bike while lying flat on the floorand exercises performed on the “Captain’s Chair”, a product typically found in gyms that helps hold the body in the air while you raise your legs up toward your chest. Researchers suggested that a varied routine of the different exercises could deliver the best results.63．Which of the following is the most effective in building abdominal muscles? A．Torso Track. B．AbDoer. C．Captain’s Chair. D．Body ShaperQ8SP.64．According to the author, it’s difficult for many Americans to get visible firm abdominal muscles mainly because . A．they do not put in enough efforts B．injuries interrupt their exercise frequently C．they change their exercise routine regularly D．how big their muscles will be is determined by birth65．The author convinces the readers by . A．describing successful eases B．offering professional connects C．presenting findings of researches D．paring advertisements of products66．What’s the main purpose of this passage? A．To research and develop in order to create the perfect stomach and exercise machine. B．To promote proven exercise techniques and to advise against false advertisements. C．To indicate that diet and exercises are necessary factors for a fit midsection. D．To sponsor rich healthy lifestyle based on advanced product research.DDestiny and Personal ResponsibilityOne important variable affecting munication across cultures is destiny（命運(yùn)）and personal responsibility. This refers to the degree to which we feel ourselves the masters of our lives, contrary to the degree to which we see ourselves as subject to things outside our control. Another way to look at this is to ask how much we see ourselves able to change and act, to choose the course of our lives and relationships. Some have drawn a parallel between the personal responsibility in North American settings and the view itself. The North American view is vast, with large spaces of unpopulated land. The frontier attitude of “King” of the wilderness, and the