常见的网络数据监听工具有( )、( )、TCPdump等。
参考答案:Sniffer Pro Ethereal
语法填空
I needed his help 1______I had very little education. I began school at six. The school 2______ I
studied for only two years was three kilometres away. I had to leave because my family could not
continue to pay the 3_____ fees and the bus fare. I could not read 4_____ write well. After trying hard,
I got a job in a gold mine.
However, this was a time 5_____one had got to have a passbook to live in Johannesburg. Sadly I
did not have 6____ because I was not born there, 7______ I worried about whether I would become
8___ of work.
The day when Nelson Mandela helped me was 9_____ of my happiest. He told me how to get the
correct papers so I could stay in Johannesburg. I became more 10(hope)_______ about my future.
按照国际习惯,一国货币单位的名称往往就是该国货币的名称,几国同用一个货币单位名称,则在货币单位名称前面加上国家名。下列比较特殊的国家是______
A.美国 B.加拿大C.日本 D.中国