[单项选择]

Children are a relatively modem invention. Until a few hundred years ago they did not exist. In Medieval and Renaissance painting you can see pint-sized men and women, wearing grown-up clothes and grown-up expressions, performing grown-up tasks. Children did not exist because the family as we know it had not evolved.
Children today not only exist; they have taken over, in no place more than in America, and at no time more than now. It is always Kids’ Country here. Our civilization is child-centered, child-obsessed. A kid’s body is our physical ideal. One way or another we are determined to "keep in shape", and invariably this means keeping a kid’s shape. On Kids’ Country we do not permit middle age. Thirty is promoted over 50, but 30 knows that soon his time to be overtaken will come. In our over-sixty population there are ten widows for every man. Like a child’s room, Kids’ Country is a mess. New York city seems about to disa
A. ask people to pay attention to physical fitness
B. criticize America for its overemphasis on the young and physical appearance
C. let people know the importance of jogging and doing push-ups
D. praise American society

[单项选择]

Children are a relatively modem invention. Until a few hundred years ago they did not exist. In Medieval and Renaissance painting you can see pint-sized men and women, wearing grown-up clothes and grown-up expressions, performing grown-up tasks. Children did not exist because the family as we know it had not evolved.
Children today not only exist; they have taken over, in no place more than in America, and at no time more than now. It is always Kids’ Country here. Our civilization is child-centered, child-obsessed. A kid’s body is our physical ideal. One way or another we are determined to "keep in shape", and invariably this means keeping a kid’s shape. On Kids’ Country we do not permit middle age. Thirty is promoted over 50, but 30 knows that soon his time to be overtaken will come. In our over-sixty population there are ten widows for every man. Like a child’s room, Kids’ Country is a mess. New York city seems about to disa
A. To show that men and women were smaller than now.
B. To show that there were no children at all at that time.
C. To show that children wore and acted like adults at that time.
D. To show that children were not permitted to appear in paintings.

[单项选择]In modem western society, younger children sleep in their mother's room.

[单项选择]Modem的速率
A. 650M
B. 1024M
C. 56K
D. 1024字节
E. 1.44M

[单项选择]The years after 1812 were relatively unproductive because ______.


A. he felt good in his romantic relationships
B. he realized that his hearing was compromised
C. he felt inadequate to create more musical pieces
D. he was very low in spirits

[单项选择]家里拨号上网需要使用MODEM。下面关于MODEM的说法中错误的是______。
A. 调制器完成将模拟信号恢复成数字信号的功能
B. MODEM的调制方式主要有：振幅调制、频率调制和相位调制
C. MODEM主要分为外置式、内置式、插卡式和机架式
D. MODEM的传输模式主要有：传真模式、语音模式

[单项选择]Cable Modem是宽带接入方式之一。下面关于Cable Modem接入方式的叙述中，错误的是
A. 它利用现有的有线电视电缆线作为传输介质
B. 它利用一根同轴电缆可以在上网的同时收看电视节目
C. 用户可以始终处于连线状态，无需像普通Modem那样拨号后才能上网
D. 它的传输速度很快，并且不会因为同一条线路上用户数的增加而影响该线路其他用户的带宽

[单项选择]当作为RS—232接口标准中DCE设备的MODEM和作为DTE设备的计算机相连时，MODEM收到呼叫信号后向计算机发送的信号是 (24) 。
A. 载波检测
B. 振铃指示
C. DTE就绪
D. DCE就绪

[单项选择]The development of modem communications technology in developing countries may______.


A. hinder their industrial production
B. cause them to lose control of their trade
C. force them to reduce their share of exports
D. cost them their economic independence

[单项选择]Modem linguistics differs from traditional grammar for it is mostly ______.


A. prescriptive.
B. descriptive.
C. subjective.
D. analytic.

[单项选择]Modem是家庭PC机利用电话线上网的常用设备之一。下面关于Modem的叙述中， 错误的是
A)Modem既能将数字信号变换成模拟信号，也能把模拟信号恢复成数字信号
B)Modem的数据传输速率一般是33.6kbps或56kbps
C)Modem工作时需遵守一系列的协议，包括调制协议、差错控制协议和数据压缩
D)有一种“软Modem”，其功能都是由软件完成的，不需要专门的硬件

[单项选择]Cable Modem是宽带接入方式之一。下面关于Cable Modem接入方式的叙述中，错误的是
A)它利用现有的有线电视电缆线作为传输介质
B)它利用一根同轴电缆可以在上网的同时收看电视节目
C)用户可以始终处于连线状态，无需像普通Modem那样拨号后才能上网
D)它的传输速度很快，并且不会因为同一条线路上用户数的增加而影响该线路其他用户的带宽

[单项选择]The relatively low income of the commercial farmers is mainly caused by ______.


A. their failure to produce enough food for sale
B. the high cost of farming
C. the competition from abroad
D. the excessive food production