首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
The computer is a wonderful machine. It is the most important invention since the type of engine used in cars. Today it has the
The computer is a wonderful machine. It is the most important invention since the type of engine used in cars. Today it has the
admin
2011-04-26
44
问题
The computer is a wonderful machine. It is the most important invention since the type of engine used in cars. Today it has the greatest effect on science, industry and business, but it is being used more in education and medicine. By the end of this century it will touch the lives of everyone, even people in distant villages. It is a revolutionary invention.
The oldest kind of computer is the abacus, used in China since the sixth century. In the seventeenth century an adding machine was invented, but the first large, modern computer was built in 1973. A few years later a computer could do 5,000 additions per second. Now the computations are so fast that they are measured in nanoseconds.
Today most computers are stored-program computers, that is, they have a memory. They are getting smaller and smaller, and computing faster and faster. Even in a large computer, the part that does the actual computing is about the size of the end of a finger.
Computers can do all kinds of work. When someone buys something in a department store, in formation about the sale goes into a computer. A scientist can talk to the computer about the rocks, and the computer answers the questions. A doctor can talk to the computer and explains what is wrong with a patient. If the doctor asks why, the computer goes through its stored information and ex plains exactly why.
When early humans began fanning, it was a revolutionary change in human life. It was hundreds of thousands of years later that people developed a writing system. In less than fifty years people have developed computers that can do most of the things humans can do. This could be a frightening development.
The part of a computer that ______ is the size of the end of a finger.
选项
A、prints the information
B、stores the information
C、does the computing
D、memorizes computing
答案
C
解析
第三段最后一句指出:“即使在大型计算机中,进行实际运算的部分也只有手指尖那样大。”
转载请注明原文地址:https://kaotiyun.com/show/YrqC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
ThebabywassenttoahospitalinLondonbecause______.Theonewhofirstsuggestedthecorrectcauseofthebaby’sillnessw
Itwas______becausehewastiredoutthathefellasleepstandingup.
Thisstorymentionscollegegraduatesat_______.Whichofthefollowingmajorshasthebestjobprospects,accordingtothest
Anystudenthavinga______interestinsportscanapplyformembershipintheclub.
Ayoungstudentlikehimcannothave______.
Thisletterismostprobablywrittenby______.Accordingtothepassage,theboycannotbetaughtto______.
PiotrekKowalski,18,comesfromPolandandwouldlikeapenpalwhoisinterestedindiscussingthecurrentpoliticalsituation
Itisimportantto______betweentherulesofgrammarandtheconventionsofwrittenlanguage.
______timandgoodexercise,carracingisaveryusefulskill.
随机试题
用电火花检漏仪检漏时,把地线一端与管材相连,地线另一端插入检漏仪,再将()装入检漏仪,才能开启检漏仪。
(2010年10月)银行利润的目的本质是______。
学生所应学习的学科知识的总和及其进程安排,在《教育学》中具体是指()
异嗜性抗原是一类与种属特异性无关的,存在于人与动物、植物、微生物之间的交叉抗原。
下列哪项不是肝性脑病三期的临床表现
有吸烟史,多为中老年人,有胸痛,痰中带血丝,消瘦。胸水呈血性,量大,迅速,CEA、LDH均高患者多有发热、咳嗽、咳痰√胸痛等症状,血白细胞高,中性粒细胞高伴核左移,胸水量不大,呈脓性,中性粒细胞为主,葡萄糖和pA降低
下列属于建设单位管理费的是()。
下列属于投资活动产生的现金流量有()。
扫描仪与计算机的接口一般有三种,其中有一种是并行传输接口,它必须配有一块接口卡,通过该接口卡可以连接包括扫描仪在内的7~15个高速设备,其传输速度快,性能高,一般在专业应用场合使用。这种接口为______接口。
Attitudesofrespect,modestyandfairplaycangrowonlyoutofslowlyacquiredskillsthatparentsteachtheirchildrenoverm
最新回复
(
0
)