问题
单项选择题
（）类IP地址的前24位表示的是网络号，后8位表示的是主机号。
A、A
B、B
C、C
D、D
答案
参考答案：C
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（）类IP地址的前24位表示的是网络号，后8位表示的是主机号。
A、A
B、B
C、C
D、D
参考答案：C
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| One day, an old lady was 1 in the street. When she passed a bank, she saw a car there. A man got 2 it and went into the bank. She looked into the car. The keys were in the lock (锁). The old lady took the keys and followed (跟着) the man into the 3 . The man 4 a gun (枪) out of his pocket, and said to the officers,"Give me 5 money. But the old lady didn't see. She went to the man and 6 the keys in his hands and said,"Young man, you're careless. Remember not to 7 your keys in your car. Someone's going to steal (偷) it." The man looked at the old woman for a few seconds. Then he took 8 and 9 the bank, got into his car and drove away 10 money. | ||||
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