The individual TV viewer invariably senses that he or she is _______ an anonymous, s

电路如图1-13(a)所示，已知v_i=5sinωtV，二极管导通电压V_D(on)=0.7V。试画出v_i与v_O的波形，并标出幅值。

C类谐振功率放大器电路如图(a)所示，偏置V_BB=0.2V，输入信号v_i(t)=1.0cosωtV，回路调谐在输入信号频率上，电源电压V_CC=20V。晶体管的转移特性曲线如图(b)所示，其中V_on=0.7V。要求：

on daytime television. And anyone who watches them regularly knows that each one varies in style. and format. But no two shows are more profoundly opposite in content, while at the same time standing out above the rest, than the Jerry Springer and the Oprah, Winfrey show.

Jerry Springer could easily be considered the king of "trash talk". The topics on his show are as shocking as shocking can be. For example, the show takes the ever-common talk show themes of love, sex, cheating, guilt, hate, conflict and morality to a different level. Clearly, the Jerry Springer show is a display and exploitation of society's moral catastrophe, yet people are willing to eat up the intriguing predicaments of other people's lives.

Like Jerry Springer, Oprah Winfrey takes TV talk show to its extreme, but Oprah goes in the opposite direction. The show focuses on the improvement of society and an individual's quality of life. Topics range from teaching your children responsibility, managing your work week, to getting to know your neighbors.

Compared with Oprah, the Jerry Springer show looks like poisonous waste being dumped on society. Jerry ends ever with a "final word". He makes a small speech that sums up the entire moral of the show. Hopefully, this is the part where most people will learn something very valuable.

Clean as it is, the Oprah show is not for everyone. The show's main target audiences are middle-class Americans. Most of these people have the time, money, and stability to deal with life's tougher problems. Jerry Springer, on the other hand, has more of an association with the young adults of society. These are 18-to 20-year olds whose main troubles in life involve love relationship, sex, money and peers. They are the ones who see some value and lessons to be learned underneath the show's exploitation.

While the two shows are as different as night and day, both have ruled the talk show circuit for many years now. Each one caters to a different audience while both have a strong following from large groups of fans. Ironically, both could also be considered pioneers in the talk Show world.

Compared with other TV talk shows, both the Jerry Springer and the Oprah Winfrey shows are

A．more family-oriented.

B．relatively formal.

C．more profound.

D．unusually popular.

less productive and more prone 【21】______ making mistakes. It is actually caused by 【22】______ of your "body clock" a small cluster of brain cells that controls the timing of biological 【23】______ . The body clock is designed for a 【24】______ rhythm of daylight and darkness, so that it is thrown out of balance when it 【25】______ daylight and darkness at the "wrong" times in a new time zone. The 【26】______ of jet-lag often persist for days 【27】______ the internal body clock slowly adjusts to the new time zone.

Now a new anti-jet-lag system is 【28】______ that is based on proven 【29】______ pioneering scientific research. Dr. Martin Moore-Ede had 【30】______ a practical strategy to adjust the body clock much sooner to the new time zone 【31】______ controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates 【32】______ of the discomfort of jet-lag.

A successful time zone shift depends on knowing the exact times to either 【33】______ or avoid bright light. Exposure to light at the wrong time can actually make jet-lag worse. The proper schedule 【34】______ light exposure depends a great deal on 【35】______ travel plans.

Data on a specific flight itinerary and the individual's sleep 【36】______ are used to produce a Trip Guide with 【37】______ on exactly when to be exposed to bright light.

When the Trip Guide calls 【38】______ bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad, 【39】______ you are on an aeroplane, you can use a special light device to provide the necessary light 【40】______ for a range of activities such as reading, watching TV or working.

【21】

A．from

B．of

C．for

D．to

rformed on a person-to person【C1】______ by the simple means of speech. If we travel in buses, stand in football match【C2】______ , we are likely to have conversation【C3】______ we give information or opinions, and sometimes have our views【C4】______ by other members of society. Face-to-face contact is【C5】______ the only form. of communication and during the last two hundred years the【C6】______ of mass communication has become one of the dominating factors of contemporary society. Two things, 【C7】______ others, have caused the enormous growth of the communication industry. Firstly, inventiveness has led to【C8】______ in printing, photography and so on. Secondly, speed has revolutionized the【C9】______ and reception of communications so that local news often takes【C10】______ back beat to national news.

No longer is the possession of information【C11】______ to a privileged minority. Forty years ago people used to【C12】______ to the cinema, but now far more people sit at home and turn on the TV to watch a programme that【C13】______ into millions of homes. Communication is no longer merely concerned【C14】______ the transmission of information. The modem communications industry influences the way people live in society and broadens, their【C15】______ by allowing access to information, education and entertainment. The printing, broadcasting and【C16】______ industries are all involved with informing, educating and entertaining.

【C17】______ a great deal of the material communicated by the mass media is very【C18】______ to the individual and to the society of which he is a part, the vast modem network of communications is【C19】______ to abuse. How ever, the mass media are with us for better, for worse, and there is no turning【C20】______ .

【C1】

A．basis

B．base

C．foundation

D．ground

Most people who travel long distances complain of jetlag (喷气飞行时差反应). Jetlag makes business travelers less productive and more prone 【C1】______ making mistakes. It is 【C2】______ caused by disruption (破坏) of your "body clock" -a small cluster of brain cells that controls the timing of biological 【C3】______ .

The body clock is designed for a 【C4】______ rhythm of daylight, and darkness, so that it is thrown out of balance when it 【C5】______ day-light and darkness at the "wrong" times in a new time zone. The 【C6】______ of jetlag often persist for days 【C7】______ the internal body clock slowly adjusts to the new time zone. Now a new anti-jetlag system is 【C8】______ that is based on 【C9】______ pioneering scientific research. Dr. Martin Moore-Ede has 【C10】______ a practical strategy to adjust the body clock much sooner to the new time zone 【C11】______ shift is easy to accomplish and eliminates 【C12】______ of the discomfort of jetlag. A successful time zone shift depends on knowing the exact times to either 【C13】______ or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule 【C14】______ light exposure depends a great deal on 【C15】______ travel plans. Data on a specific flight itinerary (旅行路线) and the individual's sleep 【C16】______ are used to produce a Trip Guide with 【C17】______ on exactly when to be exposed to bright light. When the Trip Guide calls 【C18】______ bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad, 【C19】______ you are on an aeroplane, you can use a special light device to provide the necessary light stimulus for a 【C20】______ of activities such as reading, watching TV or working.

【C1】

A．for

B．from

C．to

D．of

less productive and more prone【C1】______ making mistakes. It is actually caused by【C2】______ of your "body clock"— a small cluster of brain cells that controls the timing of biological【C3】______ . The body clock is designed for a【C4】______ rhythm of daylight and darkness, so that it is thrown out of balance when it【C5】______ daylight and darkness at the "wrong" times in a new time zone. The【C6】______ of jetlag often persist for days 【C7】______ the internal body clock slowly adjusts to the new time zone.

Now a new anti-jetlag system is【C8】______ that is based on proven【C9】______ pioneering scientific re- search. Dr. Martin Moore-Ede has【C10】______ a practical strategy to adjust the body clock much sooner to the new time zone【C11】______ controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates【C12】______ of the discomfort of jetlag. A successful time zone shift depends on knowing the exact times to either【C13】______ or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule【C14】______ light exposure depends a great deal on【C15】______ travel plans.

Data on a specific light itinerary and the individual's sleep【C16】______ are used to produce a Trip Guide with【C17】______ on exactly when to be exposed to bright light. When the Trip Guide calls【C18】______ bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad,【C19】______ you are on an aeroplane, you can use a special light device to provide the necessary light【C20】______ for a range of activities such as reading, watching TV or working.

【C1】

A．for

B．from

C．to

D．of

Most people who travel long distances complain of jetlag (喷气飞行时差反应). Jetlag makes business travelers less productive and more prone 【21】______ making mistakes. It is actually caused by 【22】______ of your “body clock” a small cluster of brain cells that controls the timing of biological 【23】______ The body clock is designed for a 【24】______ rhythm of daylight and darkness, so that is thrown out of balance when it 【25】______ daylight and darkness at the “wrong times in a new time zone. The 【26】______ of jetlag often persist for days 【27】______ the internal body clock slowly adjusts to the new time zone. Now a new antijetlag system is 【28】______ that is based on proven 【29】______ pioneering scientific research. Dr. martin Moore-Ede has 【30】______ a practical strategy to adjust the body clock much sooner to the new time zone 【31】______ controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates 【32】______ of the discomfort of jetlag.

A successful time zone shift depends on knowing the exact times to either 【33】______ or avoid brightlight. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule 【34】______ light exposure depends a great deal on 【35】______ travel plans.

Data on a specific flight itinerary(施行路线) and the individual's sleep 【36】______ are used to produce a Trip Guide with 【37】______ on exactly when to be exposed to bright light.

When the Trip Guide calls 【38】______ bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad, 【39】______ you are on an aeroplane, you can use a special light device to provide the necessary light 【40】______ for a range of activities such as reading, watching TV or working.

【21】

A．for

B．from

C．to

D．of

Journalists and TV people, we know, are () to record what goes on: but in trying to get the best () they can, they may sometimes seem amazingly cold-blooded. In the massacre that followed the British quitting India, () was a photographer who made a sorrowing Indian family bury and rebury () dead several times () he got a perfect shot. A BBC sound man held up a Nigerian execution for half an hour while he adjusted his sound equipment; you could say it didn 't () any difference to the final outcome, but it doesn 't make you feel especially warm towards the man () .

Should journalists and photographers join in, () just stand back and watch while people kill () another？ It 's a tricky question, not just a () of how brave anyone is feeling at the time, () without authentic pictures, how will the world know, how should the world believe () crimes are committed？ One dead photographer does not do much for the cause he cares about, even () he did feel forced to join in and take sides.

To stay out of the fight, to write () what 's going on, to treat () with both sides, as a doctor will cure soldiers in () uniform. or a lawyer argue for either side —that is supposed to be our code, and when it () to the crutch, we probably do better trying to stick () that, than rushing off on individual impulse. But is there not a point in any profession () you are forced back against the wall () a human being？ I think there is, and I was.

1、A) ready B) supposed C) responsible D) eager

2、A) record B) report C) essay D) article

3、A) here B) where C) there D) he

4、A) its B) the C) their D) that

5、A) when B) after C) before D) till

6、A) do B) become C) change D) make

7、A) concerning B) concerns C) concerned D) concern

8、A) but B) or C) and D) only

9、A) each B) every C) one D) all

10、A) fact B) case C) thing D) matter

11、A) but B) although C) for D) because

12、A) which B) what C) that D) such

13、A) if B) when C) then D) as

14、A) up B) away C) down D) in

15、A) equally B) evenly C) averagely D) similarly

16、A) neither B) both C) either D) all

17、A) speaks B) comes C) talks D) goes

18、A) to B) for C) on D) in

19、A) which B) where C) that D) what

20、A) as B) like C) unlike D) for

No Jetlag(时差反应)Anymore

Most people who travel long distances complain of jetlag(时差反应)． Jetlag makes business travelers less productive(多产的,有成效的)and more prone 1 making mistakes． It is actually caused by 2 of your "body clock"--a small cluster(串,组,群)of brain cells that controls the timing of biological 3 ． The body clock is designed for a regular rhythm(节奏)of daylight and darkness, so that it is thrown out of balance when it experiences daylight and darkness at the "wrong" times in a new time zone． The 4 of jetlag often persist(持续) for days 5 the internal body clock slowly adjusts to the new time zone．

Now a new anti-jetlag system is available that is based on proven 6 pioneering scientific research． Dr． Martin Moore has devised a practical strategy to adjust the body clock much sooner to the new time zone 7 controlled exposure to bright light． The time zone shift(转)is easy to accomplish and eliminates(消除) 8 of the discomfort of jetlag．

A successful time z0ne shift depends on knowing the exact times to either 9 or avoid bright light． Exposure to light at the wrong time can actually make jetlag worse． The proper schedule 10 light exposure depends a great deal on 11 travel plans．

Data on a specific flight itinerary(旅行路线)and the individual's sleep 12 are used to produce a Trip Guide with 13 on exactly when to be exposed to bright light．

When the Trip Guide calls 14 bright light you should spend time outdoors if possible． If it is dark outside, or the weather is bad, 15 you are on an aeroplane, you can use a special light device to provide the necessary light stimulus(刺激)for a range of activities such as reading, watching TV or working．

第 51 题

A．for

B．from

C．to

D．of