《食盐加碘消除碘缺乏危害管理条例》规定：（）人民政府应当将食盐加碘消除碘缺乏危害的工作纳入本

Compared with public television, commercial television______.

A．broadcast programs which don"t advertise products

B．have the right to choose programs for their audience

C．have to broadcast programs that cater to preferences of their audience

D．compete fiercely with other broadcasting stations

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What should have been found with the letter？

A．A copy of the contract.

B．Related materials of a contract.

C．Detailed information about the meeting.

D．A copy of the agenda.

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决定传染病患者隔离期长短的主要依据是

A、传染期

B、潜伏期

C、临床症状期

D、恢复期

E、病原携带期

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【C11】

A．grateful

B．deceitful

C．trustful

D．faithful

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教学用房的外墙与铁路的距离不应小于

A.50米

B.80米

C.100米

D.200米

E.300米

请帮忙给出正确答案和分析，谢谢！