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问题 单项选择题

When the result of an operation becomes larger than the limits of the representation, occurs.

A．overdose

B．overflow

C．overdraft

D．overexposure

答案

参考答案：B

解析： 译文的含义是：当一个操作的结果超过了表示范围时，就发生了( )。 各选项意思分别为：服药过量、溢出、透支、曝光过度。根据题意，本题应该选择B。

单项选择题

（）是指有一种或多种消费用途的低值易耗品。

A.非耐用品

B.耐用品

C.服务

D.选购品
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单项选择题

Throughout the 19th century and into the 20th, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centres of (1) , crime, poverty and moral (2) Their distrust was caused, (3) , by a national ideology that (4) farming the greatest occupation and rural living (5) to urban living. This attitude (6) even as the number of urban dwellers increased and cities became an essential (7) of the national landscape. Gradually, economic reality overcame ideology. Thousands (8) the precarious (不稳定的) life on the farm for more secure and better paying jobs in the city. But when these people (9) from the countryside, they carried their fears and suspicions with them. These new urbanities, already convinced that cities were (10) with great problems, eagerly (11) the progressive reforms that promised to bring order out of the (12) of the city.

One of many reforms came (13) the area of public utilities. Water and sewerage systems were usually operated by (14) governments, but the gas and electric networks were privately owned. Reformers feared that the privately owned utility companies would (15) exorbitant (过渡的) rates for these essential services and (16) them only to people who could afford them. Some city and state governments responded by (17) the utility companies, but a number of cities began to supply these services themselves. (18) of these reforms argued that public ownership and regulation would (19) widespread access to these utilities and guarantee a (20) price.

16（）

A.distribute

B.deliver

C.transfer

D.transport
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