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    4. The rain        (not stop) since three hours ago.

    4.   hasn't stopped   

    题目来源：全品作业本高中英语选修8新课标外研版 > Period Two Grammar

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      The Antarctic Icecap is the largest supply of fresh water,representing nearly 2% of the world's total fresh and salt water. As can be seen from the table below,the amount of water in our atmosphere is over 10 times as much as the water in all the rivers taken together. The fresh water actually available for hu?man use in lakes and rivers and the accessible ground water amount to only about one third of 1 % of the world's total water supply.

     

    Surface area (m2)

    Volume

    (m3)

    Percentage of total(%)

     

    Salt water


    The oceans

    139,500,000

    317,000,000

    97. 2

     

    Inland seas and lakes

    270,000

    25,000

    0.   008

     

     

    Surface area (m2)

    Volume

    (m3)

    Percentage of total(%)

    Fresh water

    Freshwater lakes

    330,000

    30,000

    0.   009

    All rivers(average level)

    ―

    300

    0.   0001

    Antarctic Icecap

    6,000,000

    6,300,000

    1. 9

    Arctic Icecap and glaciers

    900,000

    680,000

    0. 21

    Water in the atmosphere

    197,000,000

    3,100

    0.   001

    Ground water within half a mile from surface

    ―

    1,000,000

    0. 31

    Deep-lying ground water

    ―

    1,000,000

    0. 31

    Total (rounded)

    ―

    326,000,000

    100.   00

    1.What's the best title of this passage?

       A. Fresh water in the world

       B.Protection of the water in the world

       C. Salt water of the earth

       D. Water supply of the world

    2. The fresh water that humans can use is         ，

       A.   about 1,086,700 m3   B. about 6,300,000 m3

       C.   about 680,000 m3   D. about 2,000,000 m3

    3 Where does the majority of fresh water exist?

       A. In Arctic Icecap and glaciers.

       B. In the Antarctic Icecap. 

       C. In deep ground.

       D. In the atmosphere.

    4. What are the two places where equal amount of fresh water is stored?

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       B. Antarctic Icecap and water in the atmosphere.

       C. Ground water within half a mile from surface and deeplying ground water.

       D. Deeplying ground water and Arctic Icecap and glaciers.

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    科目：高中英语 来源： 题型：

      Most musicians agree that the best violins were made in Cremona,Italy, about 200 years ago. They even sound better than violins made today. Violin makers and scientists try to make instruments like the old Italian violins. But they aren't the same. Why are these old Italian violins so special? Many people think they have an answer.

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       B. Ancient things are always better than modern ones.

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