问题
单项选择题
One of the benefits of the new model is that it is easier（）than the old one.
A.operating
B.to be operated
C.to operate
D.operated
答案
参考答案：C
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One of the benefits of the new model is that it is easier（）than the old one.
A.operating
B.to be operated
C.to operate
D.operated
参考答案：C