题目内容

市场信息可为人们带来程度不同的效益,或是经济效益,或是社会效益,或者同时带来两种效益,这体现了市场信息具有()

A. 价值性
B. 时效性
C. 竞争性
D. 可变换性

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The students in the class were _____four groups before they started the game.

A. divided into
B. separated into
C. divided from
D. separated from

He’s got himself into a dangerous situation he is likely to be accused of meeting someone.()

A. where
B. which
C. while
D. why

“事以密成,语以泄败”说明信息的传递应()

A. 准确
B. 及时
C. 安全
D. 全面

信息有一个信源及多个信宿,它体现的信息特征是()

A. 抽象性
B. 层次性
C. 时效性
D. 共享性

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