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________ the earth to be flat, many feared that Columbus would fall of the edge of the earth.


  1. A.
    Having believed
  2. B.
    Believing
  3. C.
    Believed
  4. D.
    Being believed
B
解析:
“認為”是一個主動行為,因此,需要一個表示主動的分詞,選項C和D被排除。A項強調分詞所表示的主動動作早于后面的動作(常常表示時間,而此處是表示原因),語法搭配不合適,所以答案是B項。句意為:許多人認為地球是扁的,因此害怕哥倫布會從地球的邊緣掉下。
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