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    　　American researchers say drinking tea may help strengthen the body’s defense system against infection．Doctors at Brigham and Women’s Hospital in Boston, Massachusetts, did the study．The team studied a chemical found in black, green, oolong and pekoe tea．This chemical is an amino acid(氨基酸)called L-theanine．The scientists say it may increase the strength of Gamma delta T cells, which are part of the body’s defenses．

    　　First, the researchers mixed some of these cells with antigens(抗原)found in the amino acid Antigens help the body react to infection．Then the scientists added some bacteria．Within twenty-four hours, the cells produced a lot of interferon, a substance that fights infection．Cells not mixed with the antigens did not produce interferon．

    　　In the second part of the study, eleven people drank five to six cups of black tea every day．Ten other people drank the same amount of instant coffee．That is dried coffee mixed with hot water．Two weeks later, and again two weeks after that, the researchers tested the blood of all twenty-one people．They also looked at what happened when they added bacteria to the blood cells．They found that the tea drinkers produced five times more interferon after they started drinking tea．The coffee drinkers did not produce interferon．

    　　Doctor Jack Bukowski led the study．He says the antigens added to the Gamma delta T cells were responsible for the increased reaction to the bacteria．He says the study also showed that the cells were able to remember the bacteria and fight them again the next time．

    　　Earlier research already has found that tea can help prevent heart disease and cancer．Doctor Bukowski says the new study must be repeated with more people．If the findings prove to be true, he says, then tea drinking might also help protect against bacterial infections．He says the amino acid L-theanine could be removed from tea and used as a drug to strengthen the body’s defenses．

    (1)

    We may know from the text that ________ can be found in different kinds of tea．

    [　　]

    A．

    Gamma delta T cells

    B．

    L-theanine

    C．

    interferon

    D．

    bacteria

    (2)

    Tea may help strengthen the body’s defense system because it helps ________．

    [　　]

    A．

    the body to produce more interferon

    B．

    the body to produce more Gamma delta T cells

    C．

    to add some bacteria to the blood cells

    D．

    to mix antigens with some of the cells in the body

    (3)

    According to Dr Bukowski, ________．

    [　　]

    A．

    the findings of the study have already proved to be true

    B．

    he has taken some amino acid L-theanine from tea and made a drug with it

    C．

    further study is needed to prove the findings true

    D．

    he is not sure whether tea can help prevent heart disease and cancer

    (4)

    What would be the best title for this text?

    [　　]

    A．

    Tea Is Better Than Coffee

    B．

    Tea May Help Fight Infection

    C．

    Tea Can Help Prevent Cancer

    D．

    Our Body Needs Tea

    答案：1．B;2．A;3．C;4．B;
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    相关习题

    科目：高中英语 来源：人教社新课程2003年审核高一上册练习 人教社新课程2003年审核 题型：050

    阅读理解

    　　This dictionary tells you about English words and how to use them in reading,writing and speaking English. It not only gives the toeing of words,it can also help you with spelling,word-building,grammar and pronunciation.

    　　To use your dictionary correctly,you. need to understand how the dictionary works At the front of the book,you will find some exercises to help you make the most use of your dictionary.

    　　If you look up the word “colour”,you will find two spellings for this word．“Colour” is used in British English,while “color” is used in American English. When there are differences between British and American spelling,the dictionary shows it with the word “BrE” for British English and “AmE” for American English.

    　　The dictionary also helps you pronounce words correctly. We use a special alphabet(特殊字母表) to show pronunciation. If you turn to the inside hack face,you will see all the phonetic letters (音标) with some words to show you how they are pronounced Just look at the inside hack cover when you're not sure how to say a word．

    　　The most important reason for using a dictionary is to find out the meaning of a word- its DEFINITION.

    　　In this dictionary,the definitions have been written using only 2000 words. This means that the definitions of even the most difficult words are simply explained (简单解释) and easy to understand．

    　　When a word has more than one meaning,read all the meanings until you find the one that correctly tells the use of the word you are looking for.

    　　Most of the words in this dictionary can be used by people in all parts of the world．

    (1)________of the words in the dictionary have two spellings.

    [　　]

    A．All
    B．One
    C．Few
    D．Some

    (2)The AmE spelling of the Chinese word “颜色” in this dictionary is _________.

    [　　]

    A．colour
    B．colar
    C．color
    D．comer

    (3)The Chinese meaning of "definition" here is _________

    [　　]

    A．词性
    B．词条
    C．词义
    D．词库

    (4)How many words are there in this dictionary? _________

    [　　]

    A．Two thousand
    B．One thousand
    C．One hundred
    D．We don't know

    (5)The dictionary explains _________

    [　　]

    A．some of the difficult words

    B．all the words in a simple way

    C．all the easy words

    D．the words of two meanings

    查看答案和解析>>

    科目：高中英语 来源： 题型：053

    阅读理解

    　　This dictionary tells you about English words and how to use them in reading,writing and speaking English. It not only gives the toeing of words,it can also help you with spelling,word-building,grammar and pronunciation.

    　　To use your dictionary correctly,you. need to understand how the dictionary works At the front of the book,you will find some exercises to help you make the most use of your dictionary.

    　　If you look up the word “colour”,you will find two spellings for this word．“Colour” is used in British English,while “color” is used in American English. When there are differences between British and American spelling,the dictionary shows it with the word “BrE” for British English and “AmE” for American English.

    　　The dictionary also helps you pronounce words correctly. We use a special alphabet(特殊字母表) to show pronunciation. If you turn to the inside hack face,you will see all the phonetic letters (音标) with some words to show you how they are pronounced Just look at the inside hack cover when you're not sure how to say a word．

    　　The most important reason for using a dictionary is to find out the meaning of a word- its DEFINITION.

    　　In this dictionary,the definitions have been written using only 2000 words. This means that the definitions of even the most difficult words are simply explained (简单解释) and easy to understand．

    　　When a word has more than one meaning,read all the meanings until you find the one that correctly tells the use of the word you are looking for.

    　　Most of the words in this dictionary can be used by people in all parts of the world．

    (1)________of the words in the dictionary have two spellings.

    [　　]

    A．All
    B．One
    C．Few
    D．Some

    (2)The AmE spelling of the Chinese word “颜色” in this dictionary is _________.

    [　　]

    A．colour
    B．colar
    C．color
    D．comer

    (3)The Chinese meaning of "definition" here is _________

    [　　]

    A．词性
    B．词条
    C．词义
    D．词库

    (4)How many words are there in this dictionary? _________

    [　　]

    A．Two thousand
    B．One thousand
    C．One hundred
    D．We don't know

    (5)The dictionary explains _________

    [　　]

    A．some of the difficult words

    B．all the words in a simple way

    C．all the easy words

    D．the words of two meanings

    查看答案和解析>>

    科目：高中英语 来源：浙江省五校2012届高三第一次联考英语试题 题型：050

    阅读理解

    　　Below is a page adapted from an English dictionary．

    　　stick

    　　verb(stuck, stuck)

    　　push sth in

    　　[＋adv．/prep．] to push sth, usually a sharp object, into sth; to be pushed into sth：[VN] The nurse stuck the needle into my arm．◆ Don't stick your fingers through the bars of the cage．◆ [V] I found a nail sticking in the tyre．

    　　attach

    　　[＋adv．/prep．] to fix sth to sth else, usually with a sticky substance; to become fixed to sth in this way：[VN] He stuck a stamp on the envelope．◆ We used glue to stick the broken pieces together．◆ I stuck the photos into an album．◆ [V] Her wet clothes were sticking to her body．◆ The glue's useless-the pieces just won't stick．

    　　put

    　　[VN ＋adv．/prep．](informal)to put sth in a place, especially quickly or carelessly：Stick your bags down there．◆ He stuck his hands in his pockets and strolled off．◆ Can you stick this on the noticeboard? ◆ Peter stuck his head around the door and said, 'Coffee, anyone?' ◆(spoken)Stick 'em up!(＝put your hands above your head-I have a gun)

    　　become fixed

    　　[V]～(in sth)to become fixed in one position and impossible to move：The key has stuck in the lock．◆ This drawer keeps sticking．

    　　difficult situation

    　　(BrE, informal)(usually used in negative sentences and questions)to accept a difficult or unpleasant situation or person：[VN] I don't know how you stick that job．◆ They're always arguing-I can't stick it any longer．◆ The problem is, my mother can't stick my boyfriend．◆ [V -ing] John can't stick living with his parents．

    　　become accepted

    　　[V] to become accepted：The police couldn't make the charges stick(＝show them to be true)．◆ His friends called him Bart and the name has stuck(＝has become the name that everyone calls him)．

    　　[V] to not take any more cards

    　　Idioms：stick in your mind(of a memory, an image, etc．)to be remembered for a long time：One of his paintings in particular sticks in my mind．

    　　stick in your throat/craw(informal)

    　　(of words)to be difficult or impossible to say：She wanted to say how sorry she was but the words seemed to stick in her throat．

    　　(of a situation)to be difficult or impossible to accept; to make you angry

    　　stick your neck out(informal)to do or say sth when there is a risk that you may be wrong：I'll stick my neck out and say that Bill is definitely the best candidate for the job．

    　　stick to your guns(informal)to refuse to change your mind about sth even when other people are trying to persuade you that you are wrong

    　　Phrasal Verbs：stick around(informal)to stay in a place, waiting for sth to happen or for sb to arrive：Stick around; we'll need you to help us later．

    　　stick at sth to work in a serious and determined way to achieve sth：If you want to play an instrument well, you've got to stick at it．

    　　stick by sb [no passive] to be loyal to a person and support them, especially in a difficult situation：Her husband was charged with fraud but she stuck by him．

    　　stick by sth [no passive] to do what you promised or planned to do：They stuck by their decision．

    　　stick sth＜－＞down(informal)to write sth somewhere：I think I'll stick my name down on the list．

    　　stick out to be noticeable or easily seen：They wrote the notice in big red letters so that it would stick out．

    　　stick sth＜－＞out(of sth)to be further out than sth else or come through a hole; to push sth further out than sth else or through a hole：His ears stick out．◆ She stuck her tongue out at me．◆ Don't stick your arm out of the car window．

    　　stick to sth

    　　to continue doing sth in spite of difficulties：She finds it impossible to stick to a diet．

    　　to continue doing or using sth and not want to change it：He promised to help us and he stuck to his word(＝he did as he had promised)．◆ 'Shall we meet on Friday this week?' 'No, let's stick to Saturday．' ◆ She stuck to her story．

    　　stick together(informal)(of people)to stay together and support each other：We were the only British people in the town so we tended to stick together．

    　　stick up to point upwards or be above a surface：The branch was sticking up out of the water．

    　　stick with sb/sth [no passive](informal)

    　　to stay close to sb so that they can help you：Stick with me and I'll make you a millionaire!

    　　to continue with sth or continue doing sth：They decided to stick with their original plan．

    　　noun

    　　from tree

    　　[C] a thin piece of wood that has fallen or been broken from a tree：We collected dry sticks to start a fire．◆ The boys were throwing sticks and stones at the dog．◆ Her arms and legs were like sticks(＝very thin)．

    　　for walking

    　　[C](especially BrE)＝WALKING STICK：The old lady leant on her stick as she talked．

    　　in sport

    　　[C] a long thin object that is used in some sports to hit or control the ball：a hockey stick

    　　long thin piece

    　　[C](often in compounds)a long thin piece of sth：a stick of dynamite ◆ carrot sticks ◆(AmE)a stick of butter

    　　[C](often in compounds)a thin piece of wood or plastic that you use for a particular purpose：pieces of pineapple on sticks ◆ The men were carrying spades and measuring sticks．

    　　in plane/vehicle

    　　[C](informal, especially AmE)the control stick of a plane

    　　[C](informal, especially AmE)a handle used to change the GEARS of a vehicle

    　　for orchestra

    　　[C] a BATON, used by the person who CONDUCTS an orchestra

    　　criticism

    　　[U](BrE, informal)criticism or harsh words：The referee got a lot of stick from the home fans．

    　　country areas

    　　(the sticks)[pl．](informal)country areas, a long way from cities：We live out in the sticks．

    　　person

    　　[C](old-fashioned, BrE, informal)a person：He's not such a bad old stick．

    (1)

    When Jimmy says：“Every morning, I have to take the crowded bus to school, which I really can't stick．”, he may feel _________．

    [　　]

    A．

    worried

    B．

    curious

    C．

    annoyed

    D．

    discouraged

    (2)

    Due to her fashionable dress, the woman stuck out when she was walking in the street．“stuck out” in this sentence means “_________”．

    [　　]

    A．

    be noticeable

    B．

    be followed

    C．

    be admired

    D．

    be envied

    (3)

    When I was in trouble, Paul was the only one who _________ to help me．

    [　　]

    A．

    stuck in his throat

    B．

    stuck together

    C．

    stuck up

    D．

    stuck his neck out

    (4)

    Sally said to me：“Try a peaceful life out in the sticks, and you will experience something totally different．” She means _________．

    [　　]

    A．

    I should go to the woods to enjoy a new life．

    B．

    I should ignore the criticism and enjoy myself．

    C．

    I should go to the remote areas to have a change．

    D．

    I should go out by plane instead of by train to change my feelings．

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