2.Willi around 100 students scheduled to be in that 9am Monday morning lecture,it is no surprise that almost 20 people actually make it to the class and only 10of them arc still awake after the first IS minutes; it is not even a surprise that most of them are still in their pyjamas (睡衣).Obviously,students are terrible at adjusting their sleep cycles to their daily schedule.
    All human beings possess a body clock.Along with other alerting (警報(bào)) systems,this governs the sleep/wake cycle and is therefore one of the main processes which govern sleep behaviour.Typically,the preferred sleep/wake cycle is delayed in adolescents,which leads to many students not feeling sleepy until much later in the evenings.This typical sleep pattern is usually referred to as the"night owl"schedule of
    This is opposed to the"early bird"schedule,and is a kind of disorder where the individual tends to stay up much past midnight.Such a person has great difficulty in waking up in the mornings.Research suggests that night owls feel most alert and function best in the evenings and at night.Research findings have shown that about 20percent of people can be classified as"night owls"and only 10percent can be classified as"early birds"-the other 70percent are in the middle.Although this is clearly not true for all students,for the ones who are true night owls this gives them an excellent excuse for missing their lectures which unfortunately fall before midday.
43.What docs the author stress in Paragraph I?C.
A.Many students are absent from class.
B.Students are very tired on Monday mornings.
C.Students do not adjust their sleep patterns well.
D.Students are not well prepared for class on Mondays.
44.Which of the following is true according to Paragraph 2?D.
A.Most students prefer to get up late in the morning.
B.Students don't sleep well because of alerting systems.
C.One's body clock governs the sleep/wake cycle independently.
D.Adolescents'delayed sleep/wake cycle isn't the preferred pattern.
45.Which of the following is closest in meaning to the underlined word"classified"?B.
A.Criticised.B.Grouped.C.Organised.D.Named.
46.What docs the text mainly talk about?B.
A.Functions of the body clock.B.The"night owl"phenomenon.
C.Human beings'sleep behaviour.D.The school schedule of"early birds".

分析 本文是一篇說明文.以學(xué)生星期一早上課時(shí)很多學(xué)生難以將他們的睡眠周期調(diào)整到正常為例,只有20%的學(xué)生到,在上課15分鐘后,僅有10%的學(xué)生還醒著,有人還穿著睡衣,學(xué)生還沒有調(diào)整好自己的睡眠模式,說明學(xué)生不擅長(zhǎng)調(diào)整自己的生物鐘而去適應(yīng)白天的學(xué)習(xí),文章主要解釋了晚上不困,白天困的"night owl"(夜貓)這一睡眠周期現(xiàn)象.

解答 43.C    推理判斷題.文章第一段"it is no surprise that almost 20 people actually make it to the class and only 10 of them arc still awake after the first IS minutes;"及"Obviously,students are terrible at adjusting their sleep cycles to their daily schedule"可知,在星期一早上的課上只有20%的學(xué)生到位;在上課15分鐘后還有10%的學(xué)生還醒著,甚至有人還穿著睡衣,學(xué)生還沒有調(diào)整好自己的睡眠模式.故選C項(xiàng).
44.D   細(xì)節(jié)理解題.根據(jù)第二段"Typically,the preferred sleep/wake cycle is delayed in adolescents …"可知,學(xué)生們對(duì)他們自己的睡眠模式不熟悉,沒有能夠恰當(dāng)?shù)厝フ{(diào)整適應(yīng)自己的生物鐘,因而造成了睡眠問題,故選D項(xiàng).
45.B   推理判斷題.根據(jù)第三段中"Research findings have shown that about 20 percent of people can be classified as"night owls"and only 10 percent can be classified as"early birds"-the other 70 percent are in the middle"調(diào)查結(jié)果表明大約20%的人可歸類為"貓頭鷹"型,只有10%的人可以歸為"早起"型.此處"classify"應(yīng)為"歸類,分類"等意思.把不同的人分為不同的類型.故選B項(xiàng).
46.B  推理判斷題.本文通過星期一早晨學(xué)生很難從原來的睡眠模式里轉(zhuǎn)換調(diào)整例子引入,然后分析并介紹造成這種情況的原因,文章主要解釋了晚上不困,白天困的"night owl"這一睡眠周期現(xiàn)象.故選B.

點(diǎn)評(píng) 解答細(xì)節(jié)理解題時(shí),一個(gè)常用的方法就是運(yùn)用定位法,即根據(jù)題干和選項(xiàng)中的關(guān)鍵詞從原文中找到相關(guān)的句子,與選項(xiàng)進(jìn)行比較從而確定答案;推理判斷題既要求學(xué)生透過文章表面文字信息推測(cè)文章隱含意思,又要求學(xué)生對(duì)作者的態(tài)度、意圖及文章細(xì)節(jié)的發(fā)展作正確的推理判斷,力求從作者的角度去考慮,不要固守自己的看法或觀點(diǎn).

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