---______ sweep the classroom yesterday？

---I was playing tennis with my friend．


  1. A.
    Why not
  2. B.
    Why didn't
  3. C.
    Why don't
  4. D.
    Why didn't you
D
選項(xiàng)B、C錯誤，因?yàn)榫渥尤敝髡Z；選項(xiàng)A錯，因?yàn)椤癢hy not（+動詞原形）”這一結(jié)構(gòu)通常不用于過去（即不與過去時間連用）。
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科目：高中英語 來源： 題型：閱讀理解

Stepping into a pool of water is common enough, but who could ever imagine stepping into a pool of fish? In February of 1974, Bill Tapp, an Australian farmer, saw a rain of fish that covered his farm. How surprised he must have been!

    What caused this strange occurrence? This is a question that had long puzzled people who study fish. The answer turned out to be a combination of wind and storm.

    When it is spring in the northern part of the world, it is fall in Australia. Throughout the autumn season, terrible storms arise and rains flood the land. The strong winds sweep over Australia like huge vacuum cleaners (吸塵器), collecting seaweed, pieces of wood, and even schools of fish. Strong winds may carry these bits of nature for many miles before vacuum dropping them on fields, houses, and astonished people.

    Although they seem unusual, fish-falls occur frequently in Australia. When Bill Tapp was asked to describe the scene of fish, he remarked, “They look like millions of dead birds falling down.” His statement is not surprising. The wonders of the natural world are as common as rain. Nature, with its infinite wonders, can create waterfalls that flow upward and fish that fall out of the sky.

What is this passage about?

     A. A sad story.                     B. Australia’s northern part.

     C. A rain of fish.                    D. The damage done by floods.

Fish-falls occur in Australia __________.

     A. quite often                      B. on large farms

     C. only in winter                   D. when the air is calm

The underlined word “infinite” is closest in meaning to “__________”.

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科目：高中英語 來源： 題型：閱讀理解

Stepping into a pool of water is common enough, but who could ever imagine stepping into a pool of fish? In February of 1974, Bill Tapp, an Australian farmer, saw a rain of fish that covered his farm. How surprised he must have been when he heard many fish hitting against his roof!

　　 What caused this strange occurrence? This is a question that had long puzzled people who study fish. The answer turned out to be a combination of wind and storm.

　　When it is spring in the northern part of the world, it is fall in Australia. Throughout the autumn season, terrible storms arise and rains flood the land. The strong winds sweep over Australia like huge vacuum cleaners, collecting seaweed, pieces of wood, and even schools of fish. Strong winds may carry these bits of nature for many miles before dropping them on fields, houses, and astonished people.

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　　57. Fish-falls occur in Australia_________ .

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