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    72．So many helped the local people in the earthquake． 72. 【查看更多】

     

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    　　From the coldest arctic ice to the hottest deserts you will find mammals living and thriving(兴旺)．There seems to be no climate that they can't adapt to, however changeable it may be．Why can mammals adapt to so many different habitats? There is a good reason for this－mammals have the ability to keep their body at a constant temperature whatever the weather．They are “warm-blooded”．

    　　Mammals achieve this by chemically “burning” their food as fuel inside their bodies．This is kept under tight control by a region of the brain that acts like a thermostat(恒温器), and this makes sure that the mammal's body temperature stays about the same．

    　　A constant body temperature is a great advantage for mammals because all the chemical processes that go on inside a living body are likely to happen more slowly at low temperatures and faster at higher temperatures．Mammals can regulate their temperature at the best condition for all these processes, allowing them to be active at very cold or very hot periods and to keep up tiring activity for a long time．Animals such as lizards(蜥蜴)rely on moving in and out of the warm sunlight to regulate their body temperature．They slow down when they can't warm up and may die if they can't get away from heat．They also tend to overheat quickly when they are active as their muscles produce warmth．

    　　Using food energy to keep body temperature constant is expensive, and since mammals need to be efficient at keeping the warmth they create inside themselves, they often have fur and a cover of fat under their skin to prevent heat from escaping．To help lose heat when they are too hot, they have sweat glands(汗腺)that take the heat away from the skin through evaporating(蒸发)water．This means, though, that they need to drink more than other animals．

    (1)

    Mammals can adapt to so many habitats because ________．

    [　　]

    A．

    the climate is unchangeable

    B．

    they can regulate their body temperature

    C．

    they are “warm-blooded”

    D．

    their muscles produce warmth

    (2)

    When mammals keep their body at a constant temperature, ________．

    [　　]

    A．

    the chemical processes happen more slowly in their bodies

    B．

    the chemical processes happen faster in their bodies

    C．

    they will use less fuel inside their bodies

    D．

    they can live an active life

    (3)

    We can infer from the last paragraph that mammals ________．

    [　　]

    A．

    need to drink more than other animals

    B．

    have different ways of keeping their body temperature

    C．

    often have fur and fat to prevent heat from escaping

    D．

    have sweat glands that take the heat away from the skin

    (4)

    The writer answers the question raised in the first paragraph with ________．

    [　　]

    A．

    stories and explanation

    B．

    examples and conclusion

    C．

    evidence and argument

    D．

    explanation and comparison

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    短文改错

    　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　

    　If you take care notice in some places, you will

    　　

    (1) ______

    　　

    see the fact most smokers are young people and even 

    　　

    (2) ______

    　　

    some are middle school students．It is said that 

    　　

    (3) ______

    　　

    in China the number of the people smoked is about 

    　　

    (4) ______

    　　

    45%．Why is so many people smoke? Some 

    　　

    (5) ______

    　　

    think that smoking is pleasure, some believe that 

    　　

    (6) ______

    　　

    they can refresh themselves by smoking．In a fact, 

    　　

    (7) ______

    　　

    smoking is a bad habit, that does great harm to 

    　　

    (8) ______

    　　

    people' s healthy．The study of smoking shows that 

    　　

    (9) ______

    　　

    many kinds of disease have nothing to do with smoking．

    (10)______

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    You really did a good job! I still can’t believe you spend so little time ________ so many things.

    A. doing 　　　　 B. to do 　　　　　 C. do 　　　　　 D. done

     

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    　 My first performance in front of an audience was coming up soon.

    　 I tried as hard as I could to remain 36　 , but I had an empty feeling in my stomach. I stared down at my sweat-covered, 37　 hands.

    　 I looked up again at the audience, realizing that these were 　38 people. They were not just my mum and dad, who 　39 say, "Good job!" even if I messed up the entire piece.

    　 What if I had the wrong music? What if I played the wrong notes?

    　 As it 　40 , I was never able to answer these questions because the spotlight was 　41 for me. I grasped my hands tightly together, drying off the sweat.

    　 Slowly I walked to the mulberry piano in the 42 of the room. It contained 88 demanding keys, which were waiting impatiently to be played．I swallowed the golfball-sized lump（隆起的） in my throat and sat down. 43 , I opened the music. Next, I rested my still shaking hands on the ivory keys.

    　 As my fingers played across the keys, I was becoming more 　44 of my preparation for this moment. But the memory of my year of training came flooding back. I knew that I had practiced this piece 　45 that I could play it backwards if 　46 .

    　 Although at one point I accidentally played two keys　 47　 the intended one, I continued to move my fingers automatically. My eyes burned holes into the page in front of me.

    　 There was no　 48　 that I was going to lose my concentration. To keep this promise to myself, I leaned　 49 and focused carefully on the music.　 50 1 came to the end of the page, a warning 　51 inside my head: DON' T MAKE A MISTAKE WHEN YOU TURN THE PAGE!

    　 Needless to say, I 52　 myself with all my heart and mind. And, proud of my "page- turning" feat (技艺), I finished the 53　 of the piece without making a single mistake.

    After the final note died away, a celebration went into action 54　 my head. I had finished. I had mastered the　 55 .

    36．　 A．unknown 　　　　 B．still 　　　　　　 C．calm 　　　　　　　　　　　 D．quiet

    37．　 A．shaking　　 　　 B．moving　 　　 C．waving 　　　　　　　　 D．wandering

    38．　 A．true　 　　　　　　 B．real　 　　　 C．young　 　　　　　　　　 D．old

    39．　 A．will 　　　　　　　　 B．can　　 　　 C．could　 　　　　　　　　　 D．would

    40．　 A．turned out 　　　 B．turned up 　　 C．turned back 　　　　　　 D．turned down

    41．　 A．looking　 　　　 B．searching 　　 C．expecting 　　　　　　　 D．waiting

    42．　 A．corner　　 　　 B．cross 　　　　　 C．center　 　　　　　　　　 D．passage

    43．　 A．Slowly　 　　　 B．Happily　 　　 C．Quickly 　　　　　　　　　 D．Suddenly

    44．　 A．sure 　　　　　　　　 B．unsure 　　　　 C．certain 　　　　　　　　　 D．confident

    45．　 A．so much time　　 B．so hardly 　　 C．such a lot of time　　　 D．so many times

    46．　 A．requested　 　　 B．told　　 　　 C．demanded 　　　　　　 D．ordered

    47．　 A．in spite of 　　　　 B．instead of 　　 C．in the way of 　　　　　 D．in the shape of

    48．　 A．way 　　　　　　　　 B．need　 　　　　 C．use 　　　　　　　　　　　　 D．sense

    49．　 A．backward　　　　　 B．forward　　　　 C．upward　　　　　　　　　　 D．downward

    50．　 A．Then　　　　　　　　 B．Next　　 　　 C．When　 　　　　　　　　 D．While

    51．　 A．appeared 　　　　 B．had　 　　　　 C．raised　　　 　　　　 D．went

    52．　 A．told　 　　　　　　 B．asked　　 　 C．obeyed 　　　　　　　　　 D．refused

    53．　 A．other　 　　　　　 B．part　　 　　 C．left 　　　　　　　　　　　　 D．rest

    54．　 A．inside 　　　　　　　 B．outside 　　　　 C．out of 　　　　　　　　　　 D．on

    55．　 A．musical 　　　　　　 B．piece 　　　　　 C．impossible　　　　　　　　 D．possible

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    完形填空

    　It　1　　 　be that when the world was young, no one 　2　　　. People had to speak. Just 　3　　 　babies do. When one knew how to talk, 　4　　 　did anyone learn? That is a 　5　　 　that 　6　　 　even today.

    　What would it be 　7　　 　if people were still 　8　　 　? People might live together 　9　　 　protection, but there would be 　10　　 　cities, and no one would travel, 　11　　 　no one could tell them 　12　　 　. So many things would be 　13　　 　, that this world 　14　　 　like the world we know 　15　　 　.

    　In a world 　16　　 　no one could talk, how would we be able to 　17　　 　our feelings or tell someone 　18　　 　about something that 　19　　 　us? There would be many things that you wouldn't know 　20　　 　there would be no one to explain them to you. You could learn things only 　21　　 　looking and remembering.

    　It wouldn't be 　22　　 　to live in a world 　23　　 　no one could talk. There would still be love and friendship, but there would also be the 　24　　 　that stems from the 　25　　　.

    　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　

    (1) A．may

    　　

    B．can

    　　

    C．should

    　　

    D．ought 　　 to

    　　

    [　　]

    　　

    (2) A．knew 　　 what to do

    　　    		B．knew 　　 how to talk

    [　　]

    　　

    　  C．knows 　　 where to love

    　　    		D．knows 　　 when to start

    (3) A．as

    　　

    B．seemed

    　　

    C．like

    　　

    D．looked

    　　

    [　　]

    　　

    (4) A．what

    　　

    B．from 　　 who

    　　

    C．how

    　　

    D．where

    　　

    [　　]

    　　

    (5) A．pleasure

    　　

    B．sorrow

    　　

    C．story

    　　

    D．mystery

    　　

    [　　]

    　　

    (6) A．remains unsolved

    　　

    B．isn't a problem

    　　

    C．is told

    　　

    D．makes you happy

    　　

    [　　]

    　　

    (7) A．seem

    　　

    B．like

    　　

    C．as

    　　

    D．even

    　　

    [　　]

    　　

    (8) A．illnessless

    　　

    B．happinessless

    　　

    C．speechless

    　　

    D．helpless

    　　

    [　　]

    　　

    (9) A．from

    　　

    B．against

    　　

    C．for

    　　

    D．as

    　　

    [　　]

    　　

    (10)A．no

    　　

    B．a 　　 few

    　　

    C．many

    　　

    D．some

    　　

    [　　]

    　　

    (11)A．because

    　　

    B．for 　　

    　　

    C．except

    　　

    D．since

    　　

    [　　]

    　　

    (12)A．which way run

    　　

    B．how to do

    　　

    C．which way to go

    　　

    D．when to travel

    　　

    [　　]

    　　

    (13)A．difficult

    　　

    B．different

    　　

    C．the 　　 same

    　　

    D．easier

    　　

    [　　]

    　　

    (14)A．wouldn't be seen

    　　

    B．must the equal

    　　

    [　　]

    　　
    　　C．can 　　 be the sameD．may 　　 be different

    (15)A．in all

    　　

     B．at all

    　　

    C．above all

    　　

    D．all the same

    　　

    [　　]

    　　

    (16)A．that

    　　

    B．which

    　　

    C．where

    　　

    D．when

    　　

    [　　]

    　　

    (17)A．share

    　　

    B．spend

    　　

    C．cost

    　　

    D．take

    　　

    [　　]

    　　

    (18)A．another

    　　

    B．others

    　　

    C．other

    　　

    D．else

    　　

    [　　]

    　　

    (19)A．has taken place around

    　　

    B．happened to

    　　

    [　　]

    　　
    　　C．was 　　 broken out forD．exists 　　 about

    (20)A．whether

    　　

    B．which

    　　

    C．because

    　　

    D．where

    　　

    [　　]

    　　

    (21)A．by

    　　

    B．from

    　　

    C．on

    　　

    D．beyond

    　　

    [　　]

    　　

    (22)A．fun

    　　

    B．value

    　　

    C．use

    　　

    D．good

    　　

    [　　]

    　　

    (23)A．there

    　　

    B．which

    　　

    C．that

    　　

    D．where

    　　

    [　　]

    　　

    (24)A．happiness

    　　

    B．fear

    　　

    C．hardship

    　　

    D．mystery

    　　

    [　　]

    　　

    (25)A．unknown

    　　

    B．uncertain

    　　

    C．undecided

    　　

    D．discovered

    　　

    [　　]

    　　

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