问题
单项选择题
下面四种端口状态中，哪种状态不是快速生成树协议所维护的端口状态（）
A.Blocking状态（即Discarding状态）
B.Listening状态
C.Learning状态
D.Forwarding状态
答案
参考答案：B
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下面四种端口状态中，哪种状态不是快速生成树协议所维护的端口状态（）
A.Blocking状态（即Discarding状态）
B.Listening状态
C.Learning状态
D.Forwarding状态
参考答案：B
| 阅读理解。 |
| My name is Wang Lei. I am a bank clerk. I work with people and money. People often give the money to me or get the money from me. Many people think the job is interesting, but I don't like my job. I want to be a policeman. I think it's exciting. My name is Liu Mei. I am a policewoman working in a police station I don't like my job. I think it's boring. I want to be a teacher. I like to teach math And I like to stay with students. |
| 1. Wang Lei works _____. |
| A. in a school B. in a hospital C. in a bank D. in a police station |
| 2. Wang Lei wants to be _____. |
| A. a teacher B. a doctor C. a reporter D. a policeman |
| 3. Liu Mei is _____. |
| A. a doctor B. a policewoman C. a teacher D. a bank clerk |
| 4. Liu Mei thinks her job is _____. |
| A. interesting B. boring C. dangerous D. exciting |
| 5. Liu Mei wants to teach _____. |
| A. math B. English C. music D. Chinese |