11．Try this：For a whole day，forget about the clock．Eat when you're hungry and sleep when you're tired．What do you think will happen？
You may be surprised to find that your day is much like most other days．You'll probably get hungry when you normally eat and tired when you normally sleep．Even though you don't know what time it is，your body does．
Inside our bodies are several clocklike systems（系統(tǒng)）that follow a 24-hour cycle（循環(huán)）．Everyone is unique （唯一的），which is why you might like to stay up late while your sister always wants to go to bed early．
Regularly staying up late can make kids do worse on tests．And working at night leads to higher rates（比率）of heart disease．
"There is a growing sense that when we eat and when we sleep are important parts of how healthy we are，"says Steven Shea，Director of the Sleep Disorders Research Program at Brigham and Women's Hospital in Boston．
"During the night，we are ready to sleep，"Shea says．"During the day，we are ready to eat and move around．If you change what you are doing，everything is out of phase．That can have very bad result．"
52．According to the passage，if we forget about the clock，we willB．
A．forget the time
B．behave as usual
C．feel hungry
D．eat more food
53．A clocklike systemA．
A．has a 24-hour cycle
B．makes everyone unique
C．makes kids do worse on tests
D．leads to higher rates of heart disease
54．The underlined phrase"out of phase"meansD．
A．外面的
B．有序的
C．無助的
D．不協(xié)調(diào)的
55．The passage is written mainly to tell usB．
A．the growing sense is important to our health
B．we should follow clocklike system in our daily life
C．eat when you're hungry and sleep when you're tired
D．the clock like system makes your sister go to bed early．
分析 【文章主旨】這是一篇有關(guān)健康的閱讀，短文主要敘述了沒有了時鐘人們的行為還是會按照日常的時間點，然后引出了我們應(yīng)該遵循我們?nèi)粘５纳镧�，并通過具體論據(jù)來闡述我們應(yīng)該遵循生物鐘這個觀點．
解答 52 B 細(xì)節(jié)理解題．根據(jù)文中第二段中的You may be surprised to find that your day is much like most other days你會很驚奇地發(fā)現(xiàn)你會和你大部分其他日子極其相似，可知沒有了時鐘你還會和平常的表現(xiàn)差不多．故選B．
53 A 細(xì)節(jié)理解題．根據(jù)文中第三段中的Inside our bodies are several clocklike systems（系統(tǒng)）that follow a 24-hour cycle在我們的身體里有很多24小時循環(huán)的像鬧鐘一樣精準(zhǔn)的系統(tǒng)．聯(lián)系題中選項，故選A．
54 D 推理判斷題．根據(jù)文中最后一段中的If you change what you are doing，everything is out of phase．That can have very bad result．"可知如果你改變了你所正做的，一切都會變的不協(xié)調(diào)，這會導(dǎo)致很壞的結(jié)果．結(jié)合題中的選項，A選項為外面的，不合語意；B選項為有序的，與文中表達意思相反；C選項為無助的，與文中意思相反．故選D．
55 B 主旨大意題．縱觀全文，可知作者先敘述了沒有了時鐘人們的行為還是會按照日常的時間點，然后引出了我們應(yīng)該遵循我們?nèi)粘５纳镧�，并通過具體論據(jù)來闡述我們應(yīng)該遵循生物鐘這個觀點．結(jié)合選項，故選B．
點評 首先要仔細(xì)閱讀文章，掌握大意，然后結(jié)合具體的題目再讀短文，從中找出相關(guān)的信息，就可以確定正確答案．
