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The invention of the modern computer is one of the greatest contributions ___to man's efficiencyA.having ever been madeB.ever making C.ever made D.having ever made
题目内容：
The invention of the modern computer is one of the greatest contributions ___to man's efficiency
A.having ever been made
B.ever making
C.ever made
D.having ever made优质解答
C
这里选填的语句应该作为contributions宾语补足语,而contributions与make的关系是被动,所以应该填C
The invention of the modern computer is one of the greatest contributions ___to man's efficiency
A.having ever been made
B.ever making
C.ever made
D.having ever made
A.having ever been made
B.ever making
C.ever made
D.having ever made
优质解答
C
这里选填的语句应该作为contributions宾语补足语,而contributions与make的关系是被动,所以应该填C
这里选填的语句应该作为contributions宾语补足语,而contributions与make的关系是被动,所以应该填C
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