【单选题】
We teachers do not consider it wise to ___ our students with all sorts of exams, tests and quizzes.
A. load
B. annoy
C. sample
D. explore
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相关试题
【单选题】
He makes his students ___ knowledge through various kinds of interesting activities.
A. study
B. learn
C. achieve
D. acquire
【单选题】
For years, scientists have debated the ___ dangers of building another nuclear plant after the terrible accident.
A. available
B. potential
C. fascinating
D. genuine
【单选题】
It was a worthwhile attempt ___ it failed to achieve its purpose that we had hoped for.
A. in the end
B. now that
C. all at once
D. even though
【单选题】
Travel in space can be very exciting; ___, it can also be boring and lonely at times.
A. so
B. however
C. thus
D. therefore
【单选题】
Politicians should not ___ in business affairs that might affect their political judgment.
A. engage
B. embrace
C. depart
D. treasure
【单选题】
I wish to ___ a master’s degree in electric engineering after I graduate from college.
A. pledge
B. explore
C. pursue
D. approach
【单选题】
There is no greater importance ___ cultivating independence in children.
A. in
B. than
C. of
D. with
【单选题】
He has made it very clear ___ we should observe the new rules.
A. what
B. which
C. those
D. that
【单选题】
It was when I read his letter ___ I realized he had given me huge help.
A. that
B. then
C. before
D. after
【单选题】
Don’t worry too much, Jane. Your son ___ home already. Let’s go back and check it out.
A. returned
B. will return
C. has returned
D. may have returned
【单选题】
I believe friendship is an essential element of making a healthy, ___ life.
A. flexible
B. rewarding
C. wealthy
D. inquisitive
【单选题】
___ they have written about the behaviors of animals is hardly anything new.
A. That
B. This
C. What
D. Which
【单选题】
No other drugs are as good as this one; it must have been based on a(n) ___ formula (配方).
A. enormous
B. stimulating
C. unique
D. overwhelming
【单选题】
Mothers tend to be too ___ toward their children. They should let them see more of the worl D.
A. hopeful
B. protective
C. modest
D. encouraging
【单选题】
The investigation ___ evidence of a large-scale illegal trade in wild birds.
A. uncovered
B. outweighed
C. overwhelmed
D. evolved
【单选题】
Poor Laura! I feel so sorry for her. When she fell, she hurt her arm and, ___, broke her glasses.
A. in advance
B. in addition
C. over time
D. on the other hand
【单选题】
Showing some sense of humor can be a(n) ___ way to deal with some stressful situations.
A. genuine
B. available
C. effective
D. favorite
【单选题】
It will be worth the efforts even if you fail; the rewards you ___ will be great.
A. reap
B. boast
C. assure
D. cultivate
【单选题】
He suggested transporting the supplies by air. But it is absolutely ___, for it will cost too much.
A. unusual
B. uncertain
C. impractical
D. impressive
【单选题】
The newspaper didn’t mention the ___ of the damage caused by the fire.
A. range
B. level
C. extent
D. quantity
【单选题】
Do you ___ her novels as serious literature or as mere entertainment?
A. classify
B. notify
C. simplify
D. justify
【单选题】
He doesn’t ___ of buying a house this year because the bank has refused to lend him any money.
A. afford
B. make the most
C. run out
D. stand a chance
【单选题】
If you don’t ___ cooking today, we can go out to eat at the new restaurant.
A. would like
B. go on with
C. feel like
D. figure out、
【单选题】
Bullying (恃强欺弱) can ___ a climate of fear and anxiety in school, and prevent students from focusing on their schoolwork.
A. keep back
B. give rise to
C. feel like
D. make use of
【单选题】
Science can now ___ many things which were thought to be mysterious by ancient people.
A. care for
B. lay out
C. account for
D. set up
【单选题】
The school has ___ many after-class activity groups for the pupils to make their spare time more colorful.
A. set up
B. set off
C. set out
D. set down
【单选题】
When he was a small kid, he ___ from his peers because he could read fast and remember whatever he rea D.
A. showed off
B. worked out
C. stood out
D. straightened up
【单选题】
The fall in the number of deaths from heart disease is generally ___ improvements in diet.
A. put up with
B. attributed to
C. added to
D. replaced with
【单选题】
We can be partners for now, but ultimately you have to ___ to develop a new software for our project.
A. keep up
B. fire off
C. make sense
D. take the lead
【单选题】
Emotional Intelligence (情商) could be of practical use in many ___ such as how companies decide which job applicant to hire, how parents should raise their children, how schools should teach the students, and so on.
A. aspects
B. disciplines
C. structures
D. opportunities
【单选题】
The teacher should praise students for their correct answers and also suggest ___ possibilities.
A. unlimited
B. unique
C. alternative
D. essential
【单选题】
In some classrooms, desks are arranged in a U-shape, so the teacher can ___ easily with the students.
A. interrupt
B. interact
C. interpret
D. interview
【单选题】
Computer technology ___ individuals to educate themselves and adapt to a constantly changing job market.
A. lets
B. makes
C. enables
D. provides
【单选题】
Our hope for an enjoyable dinner was instantly ___ when the waiter dropped a salad plate on my hea D.
A. spoiled
B. restricted
C. exploded
D. vanished
【单选题】
___ the world has ever seen has occurred in the information and communications technologies.
A. Great a change
B. The great change
C. A greatest change
D. The greatest change
【单选题】
___ so many people around, it wasn’t convenient to have a long talk with him.
A. As
B. When
C. With
D. Since
【单选题】
Alice used to be terribly shy, but working abroad for a year has completely ___ her.
A. solved
B. transformed
C. characterized
D. regulated
【单选题】
Chinese Mandarin (普通话) is ___ for foreigners to learn because the changes in the tone will totally change the meaning of words.
A. difficult
B. accessible
C. competitive
D. easy
【单选题】
Take action on those things that will have the biggest ___ impact on your life with the least amount of effort.
A. portable
B. positive
C. sophisticated
D. moderate
【单选题】
The adoption of this measure will greatly reduce the ___ of greenhouse gas emissions (排放物), which may help slow global warming.
A. loan
B. decline
C. release
D. response
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【单选题】
在微机系统中，主机与高速硬盘进行数据交换一般用 方式。___
A. 程序中断控制
B. DMA
C. 程序直接控制
D. 通道方式
【单选题】
常用于大型计算机的控制方式是 。___
A. 程序中断控制
B. DMA
C. 程序直接控制
D. 通道方式
【单选题】
DMA是在 之间建立的直接数据通路。___
A. CPU与外设
B. 主存与外设
C. 外设与外设
D. CPU与主存
【单选题】
数组多路通道数据的传送是以 为单位进行的。___
【单选题】
对于低速输入输出设备，应当选用的通道是 。___
A. 数组多路通道
B. 字节多路通道
C. 选择通道
D. DMA专用通道
【单选题】
在下列四句话中，最能准确反映计算机主要功能的是 。___
A. 计算机可以存储大量信息
B. 计算机能代替人的脑力劳动
C. 计算机是一种信息处理机
D. 计算机可实现高速运算
【单选题】
计算机硬件能直接执行的只能是 。___
A. 符号语言
B. 机器语言
C. 汇编语言
D. 机器语言和汇编语言
【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
【单选题】
存储器主要用来 。___
A. 存放程序
B. 存放数据
C. 存放微程序
D. 存放程序和数据
【单选题】
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】
1010AH是 。___
A. 表示一个二进制数
B. 表示一个十六进制数
C. 表示一个十进制数
D. 表示一个错误的数
【单选题】
（1）二进制数215转换成二进制数是 ___ ，
A. 11101011B
B. 11101010B
C. 10100001B
D. 11010111B
【单选题】
二进制数215转换成八进制数是 ___ ，
A. 327
B. 268．75
C. 252
D. 326
【单选题】
二进制数215转换成十六进制数是 ___ 。
A. 137H
B. C6H
C. D7H
D. EAH
【单选题】
将二进制数01100100转换成十进制数是 ___ ，
A. 101
B. 100
C. 110
D. 99
【单选题】
将二进制数01100100转换成八进制数是 ___ ，
A. 123
B. 144
C. 80
D. 800
【单选题】
将二进制数01100100转换成十六进制数是 ___ 。
A. 64
B. 63
C. 100
D. 0AD
【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】
主（内）存用来存放 。___
A. 程序
B. 数据
C. 微程序
D. 程序和数据
【单选题】
下列存储器中，速度最慢的是 。___
A. 半导体存储器
B. 光盘存储器
C. 磁带存储器
D. 硬盘存储器
【单选题】
某一SRAM芯片，容量为16K×1位，则其地址线有 。___
A. 14根
B. 16K根
C. 16根
D. 32根
【单选题】
下列部件（设备）中，存取速度最快的是 。___
A. 光盘存储器
B. CPU的寄存器
C. 软盘存储器
D. 硬盘存储器
【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】
计算机的存储器采用分级存储体系的目的是 。___
A. 便于读写数据
B. 减小机箱的体积
C. 便于系统升级
D. 解决存储容量、价格与存取速度间的矛盾
【单选题】
某SRAM芯片，其容量为1K×8位，加上电源端和接地端后，该芯片的引出线的最少数目应为 。___
【单选题】
CPU组成中不包括 。___
A. 指令寄存器
B. 地址寄存器
C. 指令译码器
D. 地址译码器
【单选题】
计算机主频的周期是指 。___
A. 指令周期
B. 时钟周期
C. CPU周期
D. 存取周期
【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
C. 一段机器指令组成的程序可由一条微指令来执行
D. 一条微指令由若干条机器指令组成
【单选题】
与微指令的执行周期对应的是 。___
A. 指令周期
B. 机器周期
C. 节拍周期
D. 时钟周期
【单选题】
使主机从外部获取信息的设备称为 。___
A. 外部存储器
B. 外部设备
C. 输入设备
D. 输出设备
【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。
