Each worker puts in nearly 2,200 hours a year, ______ average, and contributes a

游客2024-06-22 22

问题 Each worker puts in nearly 2,200 hours a year, ______ average, and contributes about $ 30 to GDP per hour.

选项 A、with
B、in
C、on
D、under

答案 C

解析本题考查固定搭配on average的用法，意为“平均”，故本题答案为C)。

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