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【单选题】
开放系统互参联参考模型（OSI）有物理层、数据链路层、网络层、会话层、表示层、应用层和（）。A.
传输层
B.
网络接口层
C.
WEB层
D.
业务层
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】A: Do you mind my taking this seat? B:______.
A.
Yes, sit down please.
B.
No, of course not.
C.
Yes, take it please.
D.
No, you can't take it.
【单选题】----- Sit down please.----- ____________.
A.
Thank you
B.
Good afternoon
C.
I’m sorry
D.
Goodbye
【简答题】A) Oh, yes. Please . B) I like it very much . C) Sit down please. D) Fine. And you?
【简答题】Part I Listening Comprehension (25 minutes) 1. A)Oh,yes. Please. B)I like it very much. C )Sit down please. D)Fine. And you? 2. A )Take care. B)My pleasure. C )It's great. D)This way,p...
【单选题】A: Where is Lucy's room? B: ______, please. [ ]
A.
This way
B.
Sit down
C.
I don't know
D.
Yes
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