------a teacher in a university,it is necessary to have at least a master's degree.A.to become B.become C.one becomes D.one becoming答案是A,想知道这么判断就选A了,为什么,这里考查的是非谓语动词的用法.

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------a teacher in a university,it is necessary to have at least a master's degree.A.to become B.become C.one becomes D.one becoming答案是A,想知道这么判断就选A了,为什么,这里考查的是非谓语动词的用法.
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------a teacher in a university,it is necessary to have at least a master's degree.A.to become B.become C.one becomes D.one becoming答案是A,想知道这么判断就选A了,为什么,这里考查的是非谓语动词的用法.
------a teacher in a university,it is necessary to have at least a master's degree.
A.to become B.become C.one becomes D.one becoming
答案是A,想知道这么判断就选A了,为什么,这里考查的是非谓语动词的用法.

------a teacher in a university,it is necessary to have at least a master's degree.A.to become B.become C.one becomes D.one becoming答案是A,想知道这么判断就选A了,为什么,这里考查的是非谓语动词的用法.
换个语序就可以了
it is necessary to have at least a master's degree------a teacher in a university
显然应该填to become
这里的to become a teacher in a university 做主语,用becoming应该也可以,但题目中没有这个选项
而CD中都有one,有sb的一般会有for出现,而题中没有,因此只能选A

a