The new factory produces cars______ the rate of 500 a week.

admin2009-04-15  34

问题 The new factory produces cars______ the rate of 500 a week.

选项 A、on
B、at
C、in
D、with

答案B

解析 at the rate of 意为“以…速度/速率”,at符合题目要求。
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