信道白噪声双边功率谱密度n0/2=10-12W/Hz，调制信号为单音正弦信号，调制频率10kHz，计算调频指数分别等于2、5、

A．T3

B．SONET

C．Gigabit-Ethernet

D．EIA/TIA-232 serial

The best title for the text might be

A．Private-Equity and the Media Industry.

B．Private-Equity and Traditional Media Managers.

C．Private-Equity"s Role in Economic Development.

D．Private-Equity Has Much Profit to Make.

The best title for the passage is______.

A．The 1992 Los Angeles Riots

B．The Impact of Media on Current Events

C．The 1989 San Francisco Earthquake and the 1992 Los Angeles Riots

D．How Media Cover Events

The best title of this text may be

A．The Role of Media in Creating Celebrities.

B．Heroes and Celebrities.

C．Talk Show and Celebrities.

D．Celebrities and Recognition.

The best title for this text is

A．The Significance of Education.

B．Educational Investment and Its Profit.

C．Education and Modern Civilization.

D．Education: A Comparison of Its Past and Its Present.

The best source of your story is ______.

A．folk tales

B．the media

C．other story tellers

D．your experiences

ng Their Way ？" You should base your composition on the outline given in English below:

(1) The new media (e. g. the Internet) is the best source of information.

(2) The traditional media (e. g. newspapers, radio and TV) are the best source of information.

(3) Your opinion.

itional Media Giving Their Way？ You should write at least 120 words following the outline given below.

1. The new media (e.g. The internet) is the best source of information.

2. The traditional media (e.g. newspaper, radio and TV) are the best source of information.

3. Your opinion.

According to the author, ______.

A．paper is the best storage device

B．people have a choice of different information media

C．it is better to let the person responsible for information-resource management determine the medium

D．the manager should build an effective system by selecting a good combination of different media