The American economy is still in trouble，________ the Chinese economy is beginning to pick up.


  1. A.
    when
  2. B.
    however
  3. C.
    while
  4. D.
    therefore
C
解析：
這兩個分句之間是明顯的轉(zhuǎn)折關(guān)系，表示對比，所以選C 。
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科目：高中英語 來源： 題型：閱讀理解

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Skipping classes, particularly big lectures where an absence is likely to go undetected, is a tradition among college undergraduates.

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Americ Azevedo taught an “ Introduction to Computers ” at the University of California, Berkeley, US last semester. By visiting the course’s website, the 200 enrolled students could download audio recordings or watch digital videos of the lectures, as well as read the instructor’s detailed lecture notes.

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B. putting fewer lecture materials online

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A. Lectures fight digital learning aids to up class numbers   

B. Lectures apply digital learning aids to up class numbers

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D. Schools are encouraging more absenteeism

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科目：高中英語 來源： 題型：閱讀理解

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