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    If you find a poisoned person who has stopped breathing, clear the airway and try to get him ________．Next, ________ an ambulance at once．


    1. A.
      breathe; call for
    2. B.
      breathing; call on
    3. C.
      breathe; call up
    4. D.
      to breathe; call for
    D
    解析：
    get sb．doing/to do使某人做某事；
    call for叫(车)；
    call on拜访；
    call up给……打电话。
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    Every year, we catch and kill over 100 million sharks, mostly for food and for their fins. Dried shark fins are used to make shark fin soup, which sells for as much as $50 a bowl in fine Hong Kong restaurants. Other sharks are killed for sport and out of fear. Sharks are vulnerable(易受伤的) to overfishing because it takes most species 10 to 15 years to begin reproducing and they produce only a few offspring（后代）.
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    B．People kill sharks for sport.
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    D．People kill sharks because they often attack swimmers.
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    B．Sharks never get ill.
    C．Sharks are a valuable resource for human.
    D．Sharks play an important role in the ocean ecosystem.
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    D
    Are you afraid of sharks? You shouldn’t be! Below we cleared up the main myths about one of the world’s most perfectly formed creatures …
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    This is absolutely not true. There are nearly four hundred species of sharks and they vary widely in habitat, size, features, diet and lifestyle. They range from the cigar shark, which is about 15 centimetres long, to the whale shark, which can be up to about nine meters long. More than 50 percent of sharks are less than a metre long and more than 90 percent are less than two metres long. And their habitat ranges from shallow to deep water and from the Arctic to the Tropic.
    ___________________
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    Sharks have lived in the oceans for over 450 million years, long before dinosaurs appeared. There are now about 360 species of sharks, whose size, behavior, and other characteristics differ widely.

    Every year, we catch and kill over 100 million sharks, mostly for food and for their fins. Dried shark fins are used to make shark fin soup, which sells for as much as $50 a bowl in fine Hong Kong restaurants. Other sharks are killed for sport and out of fear. Sharks are vulnerable(易受伤的) to overfishing because it takes most species 10 to 15 years to begin reproducing and they produce only a few offspring（后代）.

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    D

    Are you afraid of sharks? You shouldn’t be! Below we cleared up the main myths about one of the world’s most perfectly formed creatures …

    All sharks are the same.

    This is absolutely not true. There are nearly four hundred species of sharks and they vary widely in habitat, size, features, diet and lifestyle. They range from the cigar shark, which is about 15 centimetres long, to the whale shark, which can be up to about nine meters long. More than 50 percent of sharks are less than a metre long and more than 90 percent are less than two metres long. And their habitat ranges from shallow to deep water and from the Arctic to the Tropic.

    ___________________

    This is not true, either. In fact, many shark populations are decreasing. The chief reason for this is that hundreds of thousands of them are caught in fishing nets. Depending on where they are caught. They are either killed for their fins(鳍), which are used in shark’s fin soup, or they are tossed back into the sea because they are unwanted. Almost all sharks which are discarded in this way die. Also, sharks mature late in life and produce very few young. If the current reduction in numbers continues, the ecological balance of the oceans will be severely threatened.

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    Avoid swimming at dawn or duck when visibility decreases.

    Avoid areas where there are breaking waves. Turbulent(汹涌的) water makes it difficult for sharks to see and determine whether you are prey(猎物).

    Do not wear jewellery in the water. Sharks are attracted to shiny fishes, and jewellery may resemble their scales(鳞片).

    Do not swim near schools of small fish, which are the favorite food of some sharks.

    68. The underlined word “myths” in the first paragraph means ____.

    A. an idea or story that many people believe but which is not true   

    B. something that is impossible to understand or explain or about which little is known

    C. a feeling of surprise        

    D. something that you are curious to know 

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    A. look alike B. are dangerous   

    C. usually live in deep sea    D. hardly attack people

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    A. Sharks’ fin soup is nutritious                

    B. There are too many sharks in the sea

    C. Many shark populations are decreasing  

    D. Sharks produce many young

    71. Which of the following rules should you follow when you’re going to swim in shark areas?

    A. Don’t swim before day breaks.              

    B. Choose areas where there are big waves.

    C. Wear something shiny when swimming.

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    A．get

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    37．

    A．speak

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    A．bug

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    A．and

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