Jumping out of airplane at ten thousand feet is quite exciting experience． A．不填;
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Jumpingout of ________ airplane at ten thousand feet is quite ________ excitingexperience．
A．不填;the
B．不填;an
C．an; an
D．the; the
试题答案
答案：C
提示：没有具体指陈对象的可数名词前要用不定冠词
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