C
這里選填的語句應(yīng)該作為contributions賓語補(bǔ)足語,而contributions與make的關(guān)系是被動(dòng),所以應(yīng)該填C
The invention of the modern computer is one of the greatest contributions ___to man's efficiency
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
英語人氣：897 ℃時(shí)間：2020-05-15 18:54:16
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