单项选择题

商品的价值量由生产商品的必要劳动时间所决定．它是在( )。

A．同类商品的生产者之间的竞争中实现的
B．不同商品的生产者之间的竞争中实现的
C．商品生产者与消费者之间的竞争中实现的
D．商品生产者与销售者之间的竞争中实现的
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单项选择题
Lloyd's, an association of London underwriters, developed from a small seventeenth century London coffee house, ______ underwriters at that time met to do business.
A．where
B．in that
C．which
D．that
单项选择题
The Customs shall reply in writing within （） from the date of receipt of the application for the refund of the duty paid and notify the applicant of its decision.

A. one month
B. two months
C. three months
D. six months
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