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    ( ) navy A. neighbor B. nationality C. relative D. valley 【查看更多】

     

    题目列表(包括答案和解析)

    阅读下列短文，从所给的四个选项中，选出最佳答案。

    　　     Spider silk is very strong. It can be stretched to 13% of its　　 normal length without breaking. It resists water and it is not　　 affected by extreme temperature changes. Spider silk also does not　　 react to chemicals. It is so thin that one piece of spider silk long　　 enough to reach around the world would weigh less than 1 half　　 kilogram. The publication "Discovery" reports it would take the life's　　 work of 5000 spiders to produce enough silk for one woman's dress.

    　　     Military researchers, makers of medical supplies and clothing　　 designers are very interested in spider silk research. American army　　 and navy scientists believe spider silk could be used to make stronger　　 parachutes (降落伞) and bullet proof coats. Medical equipment companies　　 believe it could be placed inside the body and clothing makers think it　　 could make a strong, light weight material.

    　　     Researchers are trying to find a way to produce large amounts of　　 spider silk without using spiders.　　

    (1) The best headline for this article is _____.

    [　　]

    A. Something About Spider　　B. A New Discovery

    C. Silk Research　　　　 　　 D. Spider Silk

    (2) Medical researchers are interested in spider silk because _____.

    [　　]

    A. they think it could be used to make woman's dress

    B. they suppose it could be used to make proof coats

    C. they believe it could be put inside the bodies

    D. they imagine it could be used to make a new strong material

    (3) Researchers want to get large quantities of spider silk by _____.

    [　　]

    A. raising many spiders　　

    B. collecting 5000 spiders　　

    C. raising large amounts of silkworms

    D. finding a new way we don't know now

    (4) "Discovery" may be ______.

    [　　]

    A. a writer or a professor　　B. a story or a novel

    C. a book or a magazine　　 　　 D. a slide or a film

    (5) What character does spider silk have?

    [　　]

    A. Water-proof.

    B. Unaffected by different temperature.

    C. Has no effect on chemical.

    D. All of the above.

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    My cousin is a sailor. He's doing very well in the _______.

    A. army　　　　 B. navy　　 C. air force　 D. boat

     

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    Reading Comprehension

    　　In a little-known part of the counter-terrorism world, one of the most effective detection systems is a 600-pound animal that works for about 20 pounds of fish a day．

    　　Since the 1960s, the United States and a handful of other countries have trained dolphins and sea lions to detect sea mines and swimmers, to recover inert torpedoes and to test objects used in Naval exercises．

    　　Program officials estimate that the sea lions in the Marine Mammal Program have recovered millions of dollars of U．S．Naval torpedoes and instrumentation dropped on the sea floor．

    　　The U．S．Navy kept its Marine Mammal Program a secret until the 1990s, and this spring CNN became one of only a handful of media outlets to see firsthand how the program works．

    　　The program has trained about 75 Pacific bottlenose dolphins, with natural biosonar(生物声纳)that tracks better than any manmade device; and 35 California sea lions, with superb underwater eyesight．

    　　Not only do these trained marine mammals track and retrieve millions of dollars in U．S．military equipment, they are also helping to save lives．

    　　The Navy won't disclose whether the dolphins and sea lions have effectively intercepted terrorists attempting to do harm to any U．S．facilities．

    　　"Either way, it serves as a deterrent effect．" says Christian Harris, operations supervisor for the program．The mammals can be deployed via C-130 cargo aircraft to perform their missions anywhere in the world within 72 hours．They have been used in exercises from Alaska to Hawaii, operating in great temperature and environmental ranges．They also have the capability to operate off vessels．

    　　Dolphins most recently were deployed in the Iraq war, performing mine detection and clearance operations in the Persian Gulf to ensure safe passage for humanitarian ships delivering aid．Some of these Iraq war "veterans" are now back home, tasked with a new mission：guarding nuclear submarines in their homeports of Bremerton, Washington, and Groton, Connecticut．

    (1)

    Which of the following statements is TRUE, according to the text?

    [　　]

    A．

    Now the U．S．Naval has about 75 Pacific bottlenose dolphins and 35 California sea lions

    on active service．

    B．

    These trained marine mammals have superb underwater eyesight and natural biosonar．

    C．

    The U．S．Naval trains these marine mammals from Alaska to Hawaii．

    D．

    The dolphins were sent in the Iraq war to protect the humanitarian ships delivering aid．

    (2)

    The underlined word "retrieve" in Paragraph 6 can be replaced by ________．

    [　　]

    A．

    find out

    B．

    recover

    C．

    save

    D．

    detect

    (3)

    Which is NOT the purpose of the Marine Mammal Program?

    [　　]

    A．

    To detect sea mines and swimmers．

    B．

    To save lives of people．

    C．

    To recover inert torpedoes．

    D．

    To help the U．S．Naval test equipment．

    (4)

    What can be inferred according to the text?

    [　　]

    A．

    These trained marine mammals eat pounds of fish a day．

    B．

    The U．S．Navy performed the Marine Mammal Program for about 30 years secretly．

    C．

    These mammals can carry out a task everywhere．

    D．

    A lot of countries will train dolphins and sea lions for anti-terrorism．

    (5)

    What would be the best title for the passage?

    [　　]

    A．

    The Special Skills of Marine Mammals

    B．

    The U．S．Anti-terrorism Program

    C．

    Exceptional Anti-terrorism Member

    D．

    Trained Marine Mammals

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    阅读下列短文, 从所给的四个选项中, 选出最佳答案。

        Spider silk is very strong. It can be stretched to 13% of its　　 normal length without breaking. It resists water and it is not affected　　 by extreme temperature changes. Spider silk also does not react to　　 chemicals. It is so thin that one piece of spider silk long enough to　　 reach around the world would weigh less then 1 half kilogram. The　　 publication "Discovery" reports it would take the life's work of 5000　　 spiders to produce enough silk for one woman's dress.

    　　

        Military researchers, makers of medical supplies and clothing　　 designers are very interested in spider silk research. American army　　 and navy scientists believe spider silk could be used to make stronger　　 parachutes (降落伞) and bullet proof coats. Medical equipment companies　　 believe it could be placed inside the body and clothing makers think it　　 could make a strong, light weight material.

    　　

        Researchers are trying to find a way to produce large amounts of　　 spider silk without using spiders.

    　　

    　　　　　　　　　　　　 

     (1)  The best headline for this article is ________.　　　　 ［　　］     A. Something About Spider　　B. A New Discovery    C. Silk Research　　　　　　 D. Spider Silk

     (2)  Medical researchers are interested in spider silk because_________. 　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］    A. they think it could be used to make woman's dress     B. they suppose it could be used to make proof coats    C. they believe it could be put inside the bodies    D. they imagine it could be used to make a new strong material

     (3) Researchers want to get large quantities of spider silk by ______.  　　　　　　　　　　　　　　　　　　　　　　　　　　　　   ［　　］    
       A. raising many spiders   
       B. collecting 5000 spiders   
       C. raising large amounts of silkworms   
       D. finding a new way we don't know now  

    (4) "Discovery" may be ________.　　　　　　　　　　　　　　［　　］    A. a writer or a professor　　B. a story or a novel    C. a book or a magazine　　   D. a slide or a film 

    (5)  What character does spider silk have?    
       A. Water-proof　　　　　　　　
       B. Unaffected by different temperature   
       C. Has no effect on chemical  
       D. All of the above　　　　　　　　　　　　　　　　　　　　   

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    C
    　　The curtain on the 2008 US presidential election finally rose last month as Requblican Senator(参议员) John McCain and Democratic Senator Barack Obama were formally selected as candidates of the two major parties.This may be one of the hardest decisions voters have to make between two appealing candidates.The big question for voters,as they face both an economic downturn and international threats,is :who will they elect? A young first - term senator promising change and new ideas,or a longtime senator with strong military experience and a reputation as a maverick(特立独行的人)？
    　　American voters have never seen a candidate quite like Obama.He has a white mother from the US and a black fater from Kenya who left the family when Obama was very young.He spent part of his youth in Indonesia.
    　　However,McCain has a very different life story.
    　　He grew up in a Navy family and was a daring pilot during the Vietnam War in the 1960s. When Obama was in kindergarten in Indonesia,McCain's plane was shot down over Ietenam and he became a prisoner of war.McCain could have been set free if he disowned America but he refused and so was held for five years.
    　　"We need a president who is very,very old,"McCain joked at his age as many others do.If elected,he would be 72 when he takes office and the oldest man to step in.
    　　So in the end,the election may depend on several factors that are hard to judge:Will Obama's race matter to a significant number of voters ? Will workingclass whites who tended to support his primary (党内初选) oponent,Hillary Clinton,vote for Obama? And perhaps most important of all,will uncertain voters be more attracted to Obama's vision or to McCain's experience?
    　　Whatever happens,one thing is clear,however:Whoever walks into the White House on January 20,2009,will find huge challenges waiting for him in the Oval Office,both at home and abroad.
    　　64.______makes the result of the election hard to predict.
    　　　A.Whether working class whites care about Obama's inexperience
    　　　B.The economic trouble the country now faces
    　　　C.Who uncertain voters will finally decide to vote for
    　　　D.McCain being too old to govern the country
    　　65.The appeal in Obama as a presidential candidate lies in _________
    　　　A.his multi - cultural background
    　　　B.his belife in tradition
    　　　C.his inexperience in politics
    　　　D.his fantastic promises
    　　66.The word "disown" in Paragraph 6 means closest to ______.
    　　　A.flee from
    　　　B.turn his back on
    　　　C.not keep it private
    　　　D.expose secrets about
    　　67.The challenges that will face the new preident______.
    　　　A.are not mentioned in the text
    　　　B.include buklding a strong party and a friendly image
    　　　C.refer to the problems of immigrants and economy
    　　　D.refer to the problems of economy amd international relations

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