30. —This wall of air is an effective answer to the problem and it ______ work.

   —But it is a question to put such a wall of air around the statue.

A.may                                 B. must                 C. should                      D. Could

C


解析:

30. C。考查情態(tài)動(dòng)詞的用法。選項(xiàng)A表示事實(shí)上的可能或允許；選項(xiàng)B表示要求或肯定的推測；選項(xiàng)C表示建議或根據(jù)一般情況的推測；選項(xiàng)D表示較小的可能性。根據(jù)句子中的關(guān)鍵詞an effective answer可知，后面表示在一般情況下的推測。

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  1. 1.

    We can infer from the passage that ______

    1. A.
      Lee Scott is Wal-Mart’s CEO
    2. B.
      there are 5, 200 stores in the world
    3. C.
      Wal-Mart has a great influence on the world market
    4. D.
      Wal-Mart has more than 7, 000 trucks all over the world
  2. 2.

    What does the underlined sentence “This is a business philosophy, not a social philosophy.” mean in the fourth paragraph?

    1. A.
      Wal-Mart predicts huge profits in its green activity
    2. B.
      Wal-Mart’s green activity is just window dressing
    3. C.
      Wal-Mart aims to solve its health-insurance practices
    4. D.
      Wal-Mart doesn’t have any social responsibility at all
  3. 3.

    What will Wal-Mart probably do in the future?

    1. A.
      Reduce air pollution in its present stores
    2. B.
      Give favorable treatment to its consumers
    3. C.
      Ask the factories to reduce their packaging
    4. D.
      Demand the fleet of trucks to use more fuel than before
  4. 4.

    What is the main idea of the last paragraph?

    1. A.
      Provide the background of the green plan
    2. B.
      Stress the purpose of Wal-Mart’s green plan
    3. C.
      Present the risk that Wal-Mart is facing nowadays
    4. D.
      Analyze the similarity between Bill Gates and Scott

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