All products have to go (     )five checks in the whole process.

admin2009-04-20  55

问题 All products have to go (     )five checks in the whole process.

选项 A、to
B、through
C、with
D、/

答案B

解析 句意为:所有产品在整个生产过程中得通过五道质量检查关。
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