IP地址中的每一段使用十进制描述时其最大值是（）A.256 B.128 C.127

发布时间：2017-07-09 07:14 │ 来源：www.tikuol.com

题型：单项选择题

问题：

IP地址中的每一段使用十进制描述时其最大值是（）

A.256

B.128

C.127

D.255

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题型：单项选择题

阅读理解。

     Tom and Fred are students. They are both twelve years old, and they are in the same (相同) class in
their school. One day, they have a fight in class, and their teacher becomes angry. She says to both of
the boys, "Stay (待) here after school this afternoon, and write your names a hundred times (一百次)."
     After the last lesson, all the other students go home, but Tom and Fred stay in the classroom. They
began to write their names in their exercise books and wait for their teacher.
    When the teacher comes, Fred is crying. The teacher looks at him and says, "Why are you crying
(哭)?"
     "Because his name is Tom King, and my name is Frederick Hollingsworth," Fred says with tears
(眼泪) in his eyes." It is too bad that I have a very, very long name!"

1. Tom and Fred are not ______.

A. in different school
B. in the same school
C. in the same class
D. classmates

2. Who has a long name?

A. Tom
B. Author (作者)
C. Fred
D. Teacher

3. After school, the other students ______.

A. stay in the classroom
B. go home
C. write their names
D. wait for the teacher

4. What is Fred doing when the teacher comes?

A. He is playing
B. He is writing
C. He is crying
D. He is sleeping

5. Why is Fred crying? Because ______.

A. he wants to go home
B. he can't write his name
C. he thinks his name is too long
D. he doesn't have an exercise book

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A.严重风湿性关节痛

B.灼样神经痛

C.带状疱疹

D.青诺综合征

E.偏头痛

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A.B杯底部所受的压强比A杯大

B.A杯底部所受的压强比B杯大

C.由于底面积不同，A杯底部所受到的压力一定大于B杯底部所受的压力

D.两者底部所受到的压力相同，因为液体的重力都是一样的，与底面积无关

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A．政治建设

B．文化建设

C．经济建设

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A．经营企业所在地海关
B．加工企业所在地主管海关
C．海关总署
D．经营地和加工企业所在地海关均可

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