【单选题】
运算器的核心部件是 。___
A. 数据总线
B. 数据选择器
C. 累加寄存器
D. 算术逻辑运算部件
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答案
D
解析
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CPU中有若干寄存器，其中存放存储器中数据和指令地址的寄存器是 ___ ，暂存数据和指令的寄存器是 (C) ，存放CPU将要执行的下一条指令地址的寄存器是 (B) 。
A. 地址寄存器
B. 程序计数器
C. 数据寄存器
D. 指令寄存器
【单选题】
将十进制数15/2表示成二进制浮点规格化数（阶符1位，阶码2位，数符1位，尾数4位）是 。___
A. 01101111
B. 01101110
C. 01111111
D. 11111111
【单选题】
在主存和CPU之间增加Cache的目的是 。___
A. 扩大主存的容量
B. 增加CPU中通用寄存器的数量
C. 解决CPU和主存之间的速度匹配
D. 代替CPU中的寄存器工作
【单选题】
微程序控制器中,机器指令与微指令的关系是________。___
A. 每一条机器指令由一条微指令执行
B. 每一条机器指令由一段用微指令编成的微程序来解释执行
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D. 一条微指令由若干条机器指令组成
【单选题】
D/A转换器是 。___
A. 把数字量转为模拟量，并把转化结果输入到计算机。
B. 把模拟量转为数字量，并把转化结果输入到计算机。
C. 把计算机输出的模拟量转换成数字量。
D. 把计算机输出的数字量转换成模拟量。
【单选题】
浮点加减中的对阶是___
A. 将较小的一个阶码调整到与较大的一个阶码相同
B. 将较大的一个阶码调整到与较小的一个阶码相同
C. 将被加数的阶码调整到与加数的阶码相同
D. 将加数的阶码调整到与被加数的阶码相同
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15. —We will build an underground in Xuzhou before 2015．
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C. C
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21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
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A. A
B. B
C. C
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【单选题】
22. —Do you know the boy________ is sitting next to Peter?
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B. B
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24.—You can use MSN to talk with Vivien on the Internet.
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C. why can I use it D. how can I use it
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B. B
C. C
D. D
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
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B. B
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( ) 26. Where does the writer of "The little Prince" come from?
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A. A
B. B
C. C
D. D
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
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B．He meets many more strange adults on other planets．
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D．He discovers interesting things such as a snake, other roses and a fox
A. A
B. B
C. C
D. D
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( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
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( ) 29. What is the writer's main purpose（目的）in writing this passage？
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D． To let people know how poor he was．
A. A
B. B
C. C
D. D
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( ) 30. Why did the father not ask his son not to do this and do that？
A．Because he felt quite confident of his son．
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C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
A. A
B. B
C. C
D. D
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( ) 31. What would someone learn from this passage？
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A. A
B. B
C. C
D. D
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( ) 32. What may be the proper Chinese for the underlined part in the passage？
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A. A
B. B
C. C
D. D
【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
A. A
B. B
C. C
D. D
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
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A. A
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【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
A. A
B. B
C. C
D. S
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
A. A
B. B
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【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
A. A
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D. D
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
A. A
B. B
C. C
D. D
【单选题】
( ) 39. The water in the river is polluted because of _____________.
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C. chemicals and other materials D. people's building a dam across a river
A. A
B. B
C. C
D. D
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
A. A
B. B
C. C
D. D
