问题
单项选择题
The most widely used LAN system is ______ which adopts a form of access known as CSMA-CD．
A．Ethemet
B．ATM
C．FDDI
D．Wireless
答案
参考答案：A
解析：
使用最为广泛的局域网是采用CSMA.CD协议的以太网。
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The most widely used LAN system is ______ which adopts a form of access known as CSMA-CD．
A．Ethemet
B．ATM
C．FDDI
D．Wireless
参考答案：A
解析：
使用最为广泛的局域网是采用CSMA.CD协议的以太网。
补全对话 A： Summer holidays will begin next month. Are you going back to your hometown? B: No. 小题1: . A: What are you going to do? B: Mum will take me to Shanghai. 小题2: . A: She’ll be very happy to see you. B: Yes, we haven’t seen each other for several years. A: 小题3: . B: She is an English teacher. She is teaching in Beijing now. But last year she taught in Tianjin. A: 小题4: . B: Yes, she has. She likes traveling. So she always moves to different places to work. A: Is she going to work in Qingdao? B: Yes. 小题5:. A: That’s great.
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