事故预警的目标是通过对安全管理和( )进行监测与评价，警示生产过程中所面临的危害程度。

A．信息管理

B．危险源

C．危险对象

D．生产活动

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