Question

6．One of the most widely accepted assumptions （假设） in our culture is that if you exercise，youwill lose weight．I exercise all the time，but I still have got fat．Why doesthis happen？
    More than 45 million Americans now belongto a health club，up from 23 million in 1993．We spend some $19 billion a yearon sports．Of course，some people join the health club but never go．Still，asone main study-the Minnesota Heart Survey-found，more of us at least say weexercise regularly．
    However，the number of fat people has risengreatly：a third of Americans are fat，and another third count as overweight．Yes，it's highly possible that those of us who regularly go to the sportscenter would weigh even more if we exercised less．But like many other people，I get hungry after I exercise，so I often eat more on the days I exercise thanon the days I don't．Could exercise actually be keeping me from losing weight？
    People believe that exercise is importantfor weight control is actually rather new．Doctors used to advise not toexercise too much，particularly for older adults who might hurt themselves．Today doctors encourage even their oldest patients to exercise because peoplewho regularly exercise are at a lower risk for most illness，especially heartproblems．They less often develop cancer and many other illnesses，but the roleof exercise in weight loss has been completely overestimated （评估过高）．
"In general，for weight loss，exercise ispretty useless，"says an exercise researcher．

31．From thepassage we learn thatA．
A．some Americans join a health club but never go there  
B．the number of overweight people has doubled since 1993
C．more than 45 million Americans now go to the sports center regularly
D．Americans waste too much money each year on sports
32．According tothe writer，people might put on weight becauseD．
A．they have the habit of going to the health club regularly
B．they eat the same food when they do not exercise
C．they exercise less than required by doctors
D．they eat more after they exercise
33．What may be thebest title for this passage？B
A．Overweight Is Not Good for Your Health  
B．Exercise Won't Make You Thin 
C．Health Club Is Part of American Lifestyle           
D．Fatness Is a Social Problem in America．

Answer 1

分析 通常我们认为，经常锻炼就可以减肥．但是研究证明，锻炼对于减肥来说收效甚微，却可以预防很多疾病，让人们身体健康．

解答 31．A  细节理解题  根据"some people join the health club but never go"可知，很多人加入俱乐部，但是却不去，故A正确；根据"More than 45 million Americans now belongto a health club，up from 23 million in 1993．"可知，是加入俱乐部的人数加倍，而不是超重的人数，故B错误；根据"some people join the health club but never go"可知，很多人没有去俱乐部，故C错误；根据"We spend some $19 billion a yearon sports"可知，文中并未提及浪费了很多钱，故D错误．故答案为A
32．D  细节理解题  根据"I get hungry after I exercise，so I often eat more on the days I exercise thanon the days I don't．Could exercise actually be keeping me from losing weight？"可知，人们不能减肥是因为锻炼后又吃了很多．故答案为D
33．B  推理判断题  根据短文大意可知，但是研究证明，锻炼对于减肥来说收效甚微，故答案为 B 锻炼不能让你变瘦．

点评 做这道题时要先通读全文，弄清短文大意，然后根据相关句子选出正确答案，最后仔细检查．