i_____a.seriously mentally ill and unable to live in normal society

Face-to-face contact is by no means the only form. of communication and during the last two hundred years the art of mass communicationhas become of one of the dominating factors of contemporary society. Two things, above others, have caused the enormous growth of the communication industry. Firstly, inventiveness has led to advances in printing, telecommunications, photography, radio and television. Secondly, speed has revolutionized the transmission and reception of communications so that local news often takes a back seat to national news, which itself is often almost eclipsed by international news.

No longer is the possession of information confined to a privileged minority. In the last century the wealthy man with his own library was indeed fortunate, but today there are public libraries. Forty years ago people used to flock to the cinema, but now far more people sit at home and turn on the TV to watch a programme that is being channeled into millions of homes. Communication is no longer merely concerned with the transmission of information. The modern communication industry influences the way people live in society and broadens their horizons by allowing access to information, education and entertainment. The printing, broadcasting and advertising industries are all involved with informing,educating and entertaining.

Although a great deal of the material communicated by the mass media is very valuable to the individual and to the society of which he is a part, the vast modern network of communications is open to abuse. However, the mass media are with us for better, for worse, and there is no turning back.

In the first paragraph the writer emphasizes the _________ of face-to-face contact in social settings.

A.nature

B.limitation

C.usefulness

D.creativity

It is implied in the passage that_______A.local news used to be the only source of information

B.local news still takes a significant place

C.national news is becoming more popular

D.international news is the fastest transmitted news

which of the following statement is INCORRECT？A.To possess information used to be a privilege

B.Public libraries have replaced private libraries

C.Communication means more than transmission

D.Information influences ways of life and thinking

From the last paragraph we can infer that the writer is________.A.indifferent to the harmful influence of the mass media

B.happy about the drastic changes in the mass media

C.pessimistic about the future of the mass media

D.concerned about the wrong use of the mass media

A、Rabbit

B、Ox

C、Tiger

D、Rat

B.showdns

C.showrouter

D.showinterface

B、Higher pitch attitude is required

C、Lower descent rate is required

B、不连续发射

C、小区负荷分担

D、动态功率控制

此题为判断题(对，错)。

B、θ=tg（H/R）+Am

C、θ=AmD

D、θ=sin（H/R）+Am