18．It is one of the greatest mysteries of nature．In case you haven't noticed，all living things follow very definite，individual rhythms，all as regular as a clock，but what makes them regular？
    Though many scientists maintain that these rhythms are the result of some outside force like gravity or radiation or both，the results of most scientific researches agree with other scientists who believe that each living thing has its own built-in biological"time clock．"
    Take the mystery of migration for example．Scientists can't really explain why many species of birds migrate in the autumn even though the temperature is still summery．The birds just seem to snub the comfortable weather that they are having．When a certain time comes，they travel south by the thousand．In spring time，they migrate northwards even though there probably is snow still covering the ground when they finally arrive．Something said"go，"and they did．
    Animals that hibernate （冬眠） are obeying individual time clocks，too．When their clock indicates the time to take a winter's nap，they do，and nothing can stop them．At a certain time in the spring，they wake up and come out regardless of the weather outside．
    Plants appear to have yearly rhythms，such as the sprouting of seeds，and they also have daily rhythms．Notice sometimes that plants raise their leaves in daylight and lower them at night．
    If you live along the California coast，you can easily observe a demonstration of this mysterious clock functioning regularly．There，from February to September，the highest tides occur exactly every fourteen and four-fifths days，and during these high tides，but at no other time，small silvery fish called grunions surf-ride a wave to the beach．There the female deposits her eggs in the sand and the male fertilizes them； then both hitch a wave-ride back to the sea．Exactly fourteen and four-fifths days later，never before or after，the tiny eggs hatch，and the high tide carries the new babies out to sea．

72．According to the passage，the mysterious rhythms result fromD．
   A．the influence of gravity on living species
   B．the effect of radiation on living species
   C．the influence of a mysterious outer force on living species
   D．the internal mechanism inside the living species
73．The underlined word"snub"in the third paragraph probably meansB．
   A．fight          B．ignore          C．symbolize         D．criticize
74．Which of the following statements is NOT TRUE？D
   A．Hibernating animals are obeying an internal time clock．
   B．The positioning of the leaves of some plants is due to the daily rhythms．
   C．The internal clock functioning is demonstrated in the reproducing habits of grunions．
   D．The yearly hibernation is more because of the weather influence than the biological functioning．
75．The passage is mainly aboutA．
   A．the rhythms of life              
   B．the reasons of mysterious hibernation
   C．strange behaviors of species     
   D．the timing for different events in the world of species．

分析 本文主要討論的是地球上生命的節(jié)奏，不同的物種有不同的生長規(guī)律，有不同的生活節(jié)奏，其實(shí)是由于其體內(nèi)的內(nèi)在機(jī)制所決定的．

解答 72----75    D B D A
72．D 根據(jù)Though many scientists maintain that these rhythms are the result of some outside force like gravity or radiation or both，the results of most scientific researches agree with other scientists who believe that each living thing has its own built-in biological"time clock．"可知，生物身上的節(jié)奏是由于其體內(nèi)的生物機(jī)制所決定的，故答案為D
73．B 根據(jù)The birds just seem to snub the comfortable weather that they are having．When a certain time comes，they travel south by the thousand．可知，候鳥不管天氣如何，只要到了某個(gè)時(shí)間就會遷徙，故答案為B
74．D 根據(jù) Animals that hibernate （冬眠） are obeying individual time clocks，too．When their clock indicates the time to take a winter's nap，they do，and nothing can stop them．At a certain time in the spring，they wake up and come out regardless of the weather outside．可知，動(dòng)物冬眠主要不是根據(jù)天氣，而是根據(jù)的內(nèi)在的生物鐘，故答案為D
75．A 縱觀全文，可知本文主要討論的是地球上生命的節(jié)奏，不同的物種有不同的生長規(guī)律，有不同的生活節(jié)奏，其實(shí)是由于其體內(nèi)的內(nèi)在機(jī)制所決定的，故答案為A

點(diǎn)評 做閱讀時(shí)經(jīng)常犯錯(cuò)的主要原因是，僅憑讀過文章后殘留在腦海中的一絲印象來勾選答案，這樣便很容易掉入出題人故意設(shè)布下的題目陷阱．所謂閱讀理解，對于題目的理解一定要忠實(shí)于原文，因此，每一道題都應(yīng)該與原文作全面的對比與核查，再得出答案．也就是說，閱讀理解的每一道題目，在原文都應(yīng)該有明確的出處，我們把這一出處叫做原文相關(guān)句，（1）排除與原文相關(guān)句主題不一致的選項(xiàng)（2）排除與原文相關(guān)句態(tài)度相反的選項(xiàng)  （3）排除用于過于極端或負(fù)面的選項(xiàng)（4）注意結(jié)合文章主旨和主題去排除．

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科目：高中英語 來源： 題型：選擇題

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科目：高中英語 來源： 題型：填空題

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科目：高中英語 來源： 題型：閱讀理解

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D．Scientists have made food more expensive to eat．
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B．They keep the color in meats．
C．They cure diseases of cows and chickens．
D．They cause the animals to become fatter．
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B．Drugs given to animals are not all for medical reasons．
C．Researchers knew about the harm of food additives about 60years ago．
D．Food may cause forty percent of cancer in the world．
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A．a(chǎn)n organization which controls the safety of food
B．a(chǎn) producer which makes additives
C．a(chǎn) factory which processes food
D．a(chǎn) hospital which cures cancer．

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科目：高中英語 來源： 題型：閱讀理解

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67．Which is introduced in the passage？D
A．A new game software．       B．A popular mobile phone．
C．A cool small machine．      D．An image recognition system．
68．What can we learn about the new technology？C
A．It can only be put into use on mobile phones．
B．It is a little unbelievable and just a fevered imagination．
C．It has taken an unending labor to bring the technology into our lives．
D．It will encourage the users to take more pictures of the street features．
69．What is the right order of the operation of MOBVIS？B
a．A city database forms in the system．
b．MOBVIS recognizes the picture and links are returned．
c．A user touches the links on the phone screen．
d．A user takes a picture of the street feature．
e．MOBVIS provides information in question．
A．a(chǎn)； e； c； d； b；   B．a(chǎn)； d； b； c； e
C．d； c； e； a； b     D．c； a； e； b； d
70．From the passage，we can infer thatC．
A．MOBVIS has already been widely used all over the world
B．the writer is trying to promote the sales of the MOBVIS system
C．this new technology will soon be very popular in our lives
D．the sales of mobile phones will decrease as MOBVIS comes on market．

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科目：高中英語 來源： 題型：選擇題

8．_________ across the railway，a train hit it．（　　）
A．While walking
B．Walking slowly
C．As the little pig walking
D．While the little pig was walking

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