问题 单项选择题

下列各项中,属于营业税计税依据的是( )。

A.金融行业转贷业务的贷款利息收入
B.个人买卖外汇的净收入
C.建筑装饰工程的料工费及其他物资和动力的价款
D.旅游公司收取的旅游费收入

答案

参考答案:C

解析: 个人买卖外汇,不征营业税;转贷业务是以贷款利息减借款利息后的余额为计税依据。

阅读理解

阅读理解。

     When we can see well, we do not think about our eyes often. It is only when we can not see perfectly

that we come to see how important our eyes are. People who are nearsighted can only see things that are

very close to their eyes. Many people who do a lot of close work, such as writing and reading, become

nearsighted. Then they have to wear glasses in order to see distant things clearly.

     People who are farsighted face just the opposite problem. They can see things that are far away, but

they have difficulty reading a book unless they hold it at arm's length. If they want to do much reading,

they must get glasses too.

     Other people do not see clearly because their eyes are not exactly the right shape. This, too, can be

corrected by glasses. Some people's eyes become cloudy because of cataracts. Long ago these people

often became blind. Now, however, it is possible to operate on the cataracts and remove them.

     When night falls, colors become fainter to the eyes and finally disappear. After your eyes have grown

used to the dark, you can see better if you use the side of your eyes rather than the centers. Sometimes,

after dark, you see a small thing to one side of you, which seems to disappear if you turn your head in its

direction. This is because when you turn your head, you are looking at the thing too directly. Men on guard

duty sometimes think they see something moving to one side of them. When they turn to look straight at it,

they can not see it any more, and they believe they were mistaken. However, this mistake happens because

the center of the eye, which is very sensitive in daylight, is not as sensitive as the sides of the eye after dark.

1. We don't know that our eyes are of great importance until _____. [ ]

A. we think about our eyes

B. we cannot see clearly

C. we wear glasses

D. we have to do much reading

2. According to the passage, a _____ is more likely to be nearsighted. [ ]

A. student

B. doctor

C. guard

D. painter

3. People who are farsighted _____. [ ]

A. can do a lot of close work without glasses

B. can only see things that are very close to their eyes

C. have difficulty reading a book if they hold it at arm's length

D. can correct their eyes by glasses

4. To see a small thing at night, it is better to look _____. [ ]

A. with wide open eyes

B. with half shut or narrowed eyes

C. straight at it

D. in a slightly different direction

单项选择题

阅读下面短文,回答下 * * 道题。
光脑,人们也许还陌生,但制造光脑的尝试,科技界早在20世纪50年代就开始了,直到20世纪80年代中后期,才可以说有了决定意义的突破。20世纪90年代中期,世界上有一台光脑已由欧共体的英国、法国、比利时、德国、意大利等国的70多名科学家研制成功,其运算速度比电脑快1000倍。
科学家们预计,光脑的进一步研制将成为21世纪高科技课题。专家们预言,21世纪将是光脑时代。
光脑在哪些方面优越于电脑呢
光脑并行处理能力强,具有超高速运算速度。电子的传播速度为593千米/秒,而光子的速度为30万千米/秒。同时,超高速电脑只能在低温状态下工作,而光脑在室温下即可展开工作;和电脑相比,光脑信息存储量更大。
众所周知,对于电脑来说,电子是信息的载体,它只能通过一些相互绝缘的导线来传导,因此,尽管现今的电脑运算速度不断提高,但电脑的能力极限还是隐约可见的。就是在最佳情况下,电子在固体中的运行速度也远远不如光速。另外,无论微电路中的电流是多么的微弱,但随着装配密度的提高,散发的热量也在不断增加,使导体之间产生电磁作用,从而制约了电脑的运行速度。
和电脑相比,光脑的“无导线计算机”传递信息的平行通道,其密度实际上是无限的。一枚直径5分硬币大小的棱镜,它的通过能力超过全世界现有电话电缆的许多倍。
此外,还有极为理想的光辐射源——激光器可供使用。最主要的一点是光子不需要导线,即使在光线相交的情况下,它们之间也丝毫不会相互影响。
科学家正试验将传统的电子转换器和光子结合起来,制造一种“杂交”的计算机。这种计算机能更快地处理信息,而又可克服目前巨型机的一个大痼疾——内部过热。而一台光脑只需要一台电脑所需要能量的一小部分就能驱动,从而大大减少机器产生的热量。光脑的许多关键技术,如光存储技术、光互联技术、光电子集成电路等都己获得突破。目前,科研工作面临的迫切任务是最大幅度地增加光计算机的运算能力,即光开关的数量。
科学家预计,成熟的、可实际应用的光脑将会在21世纪初出现。

根据原文所给信息,以下分析错误的一项是( )。

A.脑在室温下信息存储量比电脑更大。

B.电脑的信息载体是只能通过一些相互绝缘的导线来传导的电子。

C.虽然电脑的运算速度还在不断提高,但其能力是有极限的。

D.电脑的运行速度和散热量是一对相互并存制约的矛盾。