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Many difficulties have as a result of the change over to a new type of fuel. [ ]

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Many difficulties have as a result of the change over to a new type of fuel. [ ]

Many difficulties have ________ as a result of the change over to a new type of fuel.

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A.risenB.arisenC.raisedD.arose

试题答案

答案:

解析:

句意:新燃料的使用引起了许多问题。arisen是不及物动词arise的过去分词形式,意为“出现,发生”。