呼吸道感染(尤其是肺炎)、咳嗽明显时应（）

A.少用祛痰药、多用镇咳药

B.多用祛痰药、少用镇咳药

C.同时使用祛痰药和镇咳药

D.常规使用可待因

E.不使用祛痰药和镇咳药

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．revenues

B．expenses

C．outputs

D．loss