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This information allows businessmen to keep        of their list of goods by showing which items are being sold and how fast they are moving.

A．sight B．track C．touch D．sign 

B

解析試題分析：考查固定短語(yǔ)。句意：這個(gè)信息通過(guò)展示哪些商品正在出售和它們的流通速度來(lái)讓商務(wù)人士及時(shí)跟蹤了解商品清單。keep track of記錄，跟蹤，保持聯(lián)系；相當(dāng)于keep in touch with。故選B。
考點(diǎn)：考查固定短語(yǔ)

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