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问题 多项选择题

据拉扎斯菲尔德等学者的研究，意见领袖（）。

A.未必是大人物

B.社交范围较广

C.信息渠道较多

D.频繁接触大众传播

E.存在于特定的社会阶层

答案

参考答案：A, B, C, D

补全对话，情景问答

填入适当的句子，补全对话。

A: 1________, OK?

B: Sorry, Bob, I don't have a volleyball. But I have a baseball.

A: I don't want to play baseball. 2________? Do you know?

B: Maybe Eric has one. Let's go and ask him.

A&B: 3________, Eric?

C: Yes, 4________. But it's at home.

A: I'm sorry to hear that.

B: Well. Let's play football, OK?

C: 5________. Let' go and join them, Bob.

A: OK. Let's go.

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单项选择题 A1型题

抗体分类主要依据（）

A.重链的C区

B.轻链的C区

C.重链的V区

D.轻链的V区

E.抗原结合区
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