Air pollution ________ from many ________ sources．


  1. A.
    is coming; differ
  2. B.
    is coming; difference
  3. C.
    comes; different
  4. D.
    comes; differences
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科目：初中英語 來源：2012屆江蘇省泰州市永安初級中學(xué)九年級3月練習(xí)英語試卷（帶解析） 題型：寫作題

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科目：初中英語 來源：2016屆江蘇省蘇州市相城區(qū)七年級上學(xué)期期中考試英語試卷（解析版） 題型：補(bǔ)充句子

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