题目内容
The procedures(程序) of operating a computer have been ______ several times, the results
of which have made it much easier _______.
of which have made it much easier _______.
[ ]
A. cut down; to operate
B. simplified; to be operated
C. reduced; to be operated
D. simplified; to operate
B. simplified; to be operated
C. reduced; to be operated
D. simplified; to operate
D
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