2.We had known for along time that flowers of different plants open and close at different time of day.Yet no one really understands why flowers open and close like this at special time.The question is not as simple as we might think,as recent experiments have shown.In one experiment,flowers were kept in constant (持續(xù)的)darkness.We might expect that the flowers,without any information about the time of the day,did not open as they usually do.In fact,they continue to open at their usual time.This shows that they have some special ways of knowing the time.Their sense(感覺) time does not depend on information from the outside world.It is inside them:a kind of"inner (內(nèi)部的)clock".This discovery may not seem to be very important.However,it is later found that not just plants but animals have this"inner clock"which control(控制)the working of their bodies and influences their activities.Human beings,then,are also influenced by it.Whether we wish or not,it  affects such things in our life as our need for sleep or need for food.

41.Before the experiment arrived at a conclusion,people had thought that the flowers wouldA.
A.never open in constant darkness
B.change their usual time to open
C.open ahead of the time as they usually did
D.continue to open at usual time
42.The sense of time that flowers have is connected withC.
A.its age and size
B.light and temperature
C.a(chǎn) kind of strange power(力量)inside them
D.some unknown information from the outside world
43.What will happen if we make good use of the"inner clock"D
A.We'll need less sleep or food.
B.We'll be able to sleep as long as we wish to.
C.We'll be able to change our work time when necessary.
D.We'll have more energy to do our work better.
44.What's the Chinese meaning of the underlined word"affects"B
A.產(chǎn)生      B.影響   
C.給予      D.依賴.

分析 本篇文章從對(duì)開花時(shí)間的研究引出植物和人類都有生物鐘這個(gè)結(jié)論.

解答 41.A細(xì)節(jié)題.根據(jù)In one experiment,flowers were kept in constant (持續(xù)的)darkness.We might expect that the flowers,without any information about the time of the day,did not open as they usually do.在他們做的一個(gè)實(shí)驗(yàn)中,鮮花一直處于黑暗中,見不到陽光.我們可以預(yù)料,花朵在沒有接受到任何關(guān)于時(shí)間的信息的時(shí)候,他們就不會(huì)像往常一樣開放.可知答案為A.
42.C細(xì)節(jié)題.根據(jù)Their sense(感覺) time does not depend on information from the outside world.It is inside them:a kind of"inner (內(nèi)部的)clock".他們的意識(shí)時(shí)間不依賴于外界的信息,而是在他們內(nèi)部:一種"內(nèi)在的時(shí)鐘"可知答案為C.
43.D推斷題.根據(jù)However,it is later found that not just plants but animals have this"inner clock"which control(控制)the working of their bodies and influences their activities.Human beings,then,are also influenced by it.可推斷如果我們好好的利用生物鐘,我們就有更多的精力工作,故選D項(xiàng).
44.B猜詞題.根據(jù)最后一句話提到Whether we wish or not,it affects such things in our life as our need for sleep or need for food.不管我們?cè)敢膺是不愿意,生物鐘影響了我們生活中的一些事,比如我對(duì)睡眠的需要我們對(duì)食物的需求等,故選B項(xiàng).

點(diǎn)評(píng) 本文是一個(gè)科教類閱讀理解,題目涉及多道細(xì)節(jié)理解題,做題時(shí)結(jié)合原文和題目有針對(duì)性的找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.推理判斷題也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確答案,切忌胡亂猜測(cè),一定要做到有理有據(jù).

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