皮皮学，免费搜题
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【单选题】
IP协议的主要功能是（）。A.
传送数据
B.
将不同格式的物理地址转换为统一的IP地址
C.
提供连接服务
D.
责数据传输的安全性
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】听力原文：W: Oh, Peter, there you are. You've been ages. What kept you so long? M: I'm sorry I am so late, Sally. Have you been waiting long? W: Oh, half an hour. But it doesn't matter. I've had a coffee a...
A.
To go to see and talk to a friend.
B.
To go to cash his traveler's checks.
C.
To go to the bank and repair the computer.
D.
To go to the bank and save some money,
【简答题】网络编程语言的操作步骤有______。
【单选题】听力原文：W. Oh, what a nice bicycle, Peter! M: Yes, I've just bought it. W: Is it expensive? M: Not really. Only 90 dollars. How much did Peter pay for his new bicycle?
A.
9 dollars.
B.
19 dollars.
C.
90 dollars.
【简答题】网络编程语言的注意事项为______、______。
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