Many difficulties have ___ as a result of the change over to

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Many difficulties have ___ as a result of the change over to a new type of fuel.
A.risen
B.raised
C.arisen
D.arrived

选C
raise是及物动词,此句若要用raise须这样改：Many difficulties have been raised as a result of ...
rise和arise都是不及物动词,但arise有出现／呈现的意思而rise作动词时意思多与升起有关
找到一例句作参考：Difficulties arose out of the shortage of petroleum.困难起因于缺乏石油．

Many difficulties have ___ as a result of the change over to many diffigulties have ( ) as a result of the change over to many difficult have ___as a result of the changeover to a ne as the result, as a result ,as a result of ,as result ,as a 英语翻译As a result,quite a lot of people who have moved to the As a result As the result As a result of As result of 的区别 Over the past decades,sea ice ___ in the Arctic as a result 请帮我翻译：As a result of the company shareholder's change, How did the role of government change in America as a result show over. as a result . connect to. over time. 英译汉）Over the past decades,sea ice in the Arctic as a result of There are many difficulties ___ the way to success