单项选择题

M: People first sent signals by flags, some archaeologists observed.
W: No. I think they exchanged news by smoke, hence the torch towers on the Great Wall.
Q: What are they discussing?（）

A．How primitive people used flags.
B．What the ancient means of communication was.
C．Why the torch towers were built.
D．How the Great Wall came into being.

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多项选择题
（），这是一条基本规则。
A.党管干部
B.党管人才
C.党管人事
D.党管企业
单项选择题
听力原文： Prison service staff in Britain have been severely criticized in an official report for the escape of five IRA prisoners and an armed robber from White mall Prison, Cambridge shire. Bomb-making equipment was subsequently discovered at the jail. The government has announced a major review of prison security throughout England and Wales. A new task force will be set up under the Home Office and a detailed list of recommendations is expected to be issued at the end of the year.
The number of the escaped prisoners is ______.
A．6.
B．5.
C．1.
D．7.
A.
The
B.
A．6.
B．5.
C．1.
D．7.