When he was alive, the old scientist used to say that knowledge ＿＿from practice and he gained his experience by doing a lot of practical work.

A．was coming

B．had come

C．comes

D．would come

为了贯彻船舶控制毒品及酒精的规定，下列对船员的要求哪些不正确（）。

A.船上任何人、任何时候都不许饮酒过量以致酒醉

B.船上值班人员值班前一小时禁止饮酒

C.任何情况下都应考虑酒精对人的反应能力、判断能力的影响

D.严格遵守港口国有关当局的规定