12．There have always been a lot of commonly believed but false ideas about being fat and doing exercise．Some people believe that they can't help putting on weight as they get older，while others hold that if they stop exercising，their muscles will turn into fat．Here are some more myths：
I'll never lose weight---I come from a fat family
Wrong!While we can't change the body type we are born with，we can't blame（責(zé)備）our genes for making us fat．There's plenty of ev idence that fatness runs in families，and the main reason is that they share the same habits of eating too much and exercise too little．
I am fat because I burn calories slowly
Wrong!Fatness is not caused by a slow metabolism（新陳代謝）．If fact，although fat people consume（消耗）more energy that slim people，they also fail to realize how much they eat!Keeping a diary can help you work out your daily food intake（攝入） more accurately．
Exercise is boring
Wrong!Anything will become boring if you do it repetitively（重復(fù)地）．The key is to develop a balanced and varied program that's fun as well as progressive．If you enjoy a Sunday walk，take a different route．If you do Yoga，try a tai chi class．If you like swimming，set yourself a distance or time challenge．
No pain，no gain
Wrong!Exercise is not meant to hurt．Indeed，pain is your body telling you something's wrong，and continuing to exercise could lead to serious injury．You may experience mild discomfort as you begin to exercise regularly，but this is your body adapting to（適應(yīng)）the positive changes in your lifestyle and the aches should disappear relatively quickly．If you don't，rest and seek medical advice．
24．What does the author think about being fat？D
A．It is the family genes that make people fat．
B．People are fat because they consume too little energy．
C．A diary of exercise can prevent people from be coming fat．
D．It is the consequence（后果）of people's unbalanced lifestyle．
25．According to the author，how can we make exercise mom interesting？A
A．By doing varied exercise．
B．By choosing simple exercise．
C．By taking regular exercise．
D．By sticking to outdoor exercise．
26．What is the author's opinion about"No pain，no gain"in exercising？B
A．Keeping fit is essentially a painful experience．
B．Exercise should be stopped if continuous pain is felt．
C．Pain in exercise is a precondition（前提）for reaching your goal．
D．Getting used to pain leads to positive changes in your body．
27．What is the purpose of the passage？B
A．To declare（宣布）the importance of keeping lit．
B．To clarify（澄清）some false ideas about fatness and exercise．
C．To confirm what has long been believed about keeping fit．
D．To explain some medical facts about being fat and doing exercise．

分析 本文旨在澄清人們關(guān)于肥胖和運(yùn)動的幾個認(rèn)識上的誤區(qū)．作者告訴我們：肥胖與遺傳無關(guān)；肥胖不是因?yàn)樾玛惔x緩慢；運(yùn)動可以是有趣的；運(yùn)動不以疼痛為代價．

解答 24．D 推理判斷題．根據(jù)第二段的…the main reason is that they share the same habitsof eating too much and exercise too little．可知，人們肥胖的主要原因是生活方式的不平衡，表現(xiàn)為吃得太多而運(yùn)動太少．故選D．
25．A 細(xì)節(jié)理解題．根據(jù)第四段的The key is to develop a balanced and varied programthat's fun as well as progressive．可知，多樣化的運(yùn)動可使運(yùn)動變得有趣．故選A．
26．B 推理判斷題．根據(jù)No pain，no gain部分可知，作者認(rèn)為運(yùn)動只會帶來輕微的"不適"；"疼痛"是生病的征兆，繼續(xù)運(yùn)動會造成嚴(yán)重?fù)p傷．故"疼痛"持續(xù)，應(yīng)停止運(yùn)動，故選B．
27．主旨大意題．根據(jù)第一段的There have always been a lot of commonly believedbut false ideas about being fat and doing exercise．可知，關(guān)于肥胖和鍛煉，人們一直有許多普遍的錯誤的看法．所以作者寫作本文是為了澄清人們關(guān)于肥胖和運(yùn)動的認(rèn)識誤區(qū)．故選B．

點(diǎn)評 本文是科教類閱讀，主要考查細(xì)節(jié)理解題和推理判斷題．在做細(xì)節(jié)理解題時，首先根據(jù)題目要求迅速在文章里找出相應(yīng)的段落、句子或短語．認(rèn)真比較選項(xiàng)和文中細(xì)節(jié)的區(qū)別，在做推理判斷題時不要以

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A．Troubling 
B．Developing 
C．Improving 
D．Confusing
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