6．People are overweight for many reasons，the most important one of which is that they eat the wrong foods，get the wrong types of calories per meal，and they also eat meals at the wrong time each day．Food is more powerful than any weight loss pill，because the food that you eat can either make you thin or fat．This is true because your body is like an engine，and it only needs certain foods at certain intervals（間隔） each day．
Low-calorie Diets Do Not Work
The reason people cannot lose weight by starving themselves is that their metabolism（新陳代謝） will detect any major drop in calories and it will then adjust itself by burning fewer calories each day．That is the reason why you can eat 1，000 calories per day and not lose any weight，while your friends can eat 2，500 calories per day and not gain any weight．
Low-fat Diets Do Not Work
Many people in today's society are buying mostly low-fat or non-fat food at the grocery store．Everybody knows how much fat is inside the food they buy．However，people are getting fatter than ever before by doing this．They are not losing weight by changing to this low-fat lifestyle．
Losing weight has nothing to do with these things．One of the most important things you can do to control your weight is to eat the proper foods，such as fruit and vegetables，eat them at the right time，and exercise every d ay．If people make this a habit，they will lose weight．
25．What is the main reason why people are overweight？A
A．They eat the wrong foods at the wrong time．
B．They eat food with lots of calories．
C．They don't take weight loss pills．
D．They burn many calories every day．
26．The article is written in order toB．
A．tell readers not to buy low-fat or non-fat food．
B．tell readers how to lose weight．
C．tell readers about an important scientific discovery．
D．call on people to lose weight and stay healthy．
27．To realize the aim of your weight loss plan，you shouldD．
a．do exercise every day b．eat meals at the right time
c．eat fruits and vegetables d．eat low-fat or sweet food
e．eat the proper foods at each meal
A．a(chǎn)，b，c，d B．a(chǎn)，b，d，e C．a(chǎn)，c，d，e D．a(chǎn)，b，c．
分析 文章介紹人們肥胖的原因，為什么不能減肥成功，以及減肥的正確方法．
解答 25．A．細節(jié)題：從第一段的內(nèi)容the most important one of which is that they eat the wrong foods，get the wrong types of calories per meal，and they also eat meals at the wrongtime each day．可知減肥失敗的重要原因是在錯誤的時間吃了錯誤的食物，故選A．
26．B．主旨題：從文章內(nèi)容可知是講怎么減肥．故選B
27．D．細節(jié)題：由倒數(shù)第二段Many people in today's society are buying mostly low-fat or non-fat food at the grocery store，Everybody knows how much fat is inside the food they buy．可知減肥是不能吃油膩和甜食的，排除d，故選D
點評 在做閱讀理解時，考生可快速閱讀短文，通讀測試題，明確考察點，在對應(yīng)細讀，加快做題速度．有時間還可以復(fù)查校對答案．
