问题
单项选择题
All of these applications will enhance the (130) of life and spur economic growth. Over half of the U.S. work force is now in jobs that are information (131) . The telecommunication and information sector of the U.S. economy now (132) for 12 percent of the Gross Domestic Product, growing much faster than any other sector of the economy. Last year the (133) in this sector exceeded 700 billion dollars. The U.S. exported over 48 billion dollars of telecommunication equipment (134) .
A．among
B．alone
C．simple
D．single
答案
参考答案：B
解析：
[分析]： 所有这些应用都会提高人们的生活质量并刺激经济增长。现在美国半数以上的劳动力从事着依赖于信息的工作。在美国经济中，通信和信息部门占国内国民生产总值的12%，而且增长速度也比任何其他经济部门都快。去年该行业收入超过7000亿美元，美国仅电信设备的出口额就超过480亿元。