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A．She isn't there in the morning.B．Her assistant isn't there in the morning.C．She won'
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Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
Every year television stations receive hundreds of complaints about the loudness of advertisements. However, federal rules forbid the practice of making ads louder than the programming. In addition, television stations always operate at the highest sound level allowed for reasons of efficiency. According to one NBC executive, no difference exists in the peak sound level of ads programming. Given this information, why do commercials sound so loud？
The sensation of sound involves a variety of factors in addition to its speak level. Advertisers are skillful at creating the impression of loudness through their expert use of such factors. One major contributor to the perceived loudness of commercials is that much less variation in sound level occurs during a commercial. In regular programming the intensity of sound varies over a large range. However, sound levels in commercials tend to stay at or near peak levels.
Other "tricks of the trade" are also used. Because low-frequency sounds can mask higher frequency sounds, advertisers filter out any noises that any drown out the primary message. In addition, the human voice has more auditory (听觉的) impact in the middle frequency ranges. Advertisers electronically vary voice sounds so that they stay within such a frequency band. Another approach is to write the script. so that lots of consonants (辅音) are used, because people are more aware of consonants than vowel (元音) sounds. Finally, advertisers try to begin commercials with sounds that are highly different from those of the programming within which the commercial is buried. Because people become adapted to the type of sounds coming from programming, a dramatic change in sound quality draws viewer attention. For example, notice how many commercials begin with a cheerful song of some type.
The attention-getting property of commercial can be seen by observing one-to-two-year-old children who happen to be playing around a television set. They may totally ignore the programming. However, when a commercial comes on, their attention is immediately drawn to it because of its dramatic sound quality.
According to the passage, the maximum intensity of sound coming from commercials______.
AIDS is the leading cause of death among women and babies in 15 cities of the USA.
AIDS
The disease AIDS has become the leading cause of death among young adults in America. Much recent
American culture deals with people living with or dying of AIDS. The story of AIDS and its effect on American life is not story today on the VOA Special English program THIS IS AMERICA.
AIDS is Acquired Immune Deficiency Syndrome. The human immunodeficiency virus called HIV is believed to cause AIDS. There is no cure. People who get the disease will die. AIDS itself does not kill. However, it attacks and destroys the body's defense system that fights against infection. When this happens, a person has little ability to fight off many other diseases including pneumonia, cancer and tuberculosis.
A recent government report says AIDS is the leading cause of death among Americans between the ages of 25 and 44. The report says deaths caused by AIDS in this age group have increased every year since the disease was first recognized in 1981. Last year more than 80 thousand new AIDS cases were reported in the United States.
Studies show that in 1993 most of the new cases were among minority populations, especially African-Americans and Hispanics.
A new study says the number of women in the United States with AIDS has increased sharply. The study says AIDS is increasing faster among women than among men. Eighteen percent of AIDS patients are women. This is almost 3 ties the rate 10 years ago. Most women get the AIDS virus from having sexual relations with men.regnant women with the disease can pass it to their babies. The effect of AIDS in America is greatest in large cities. AIDS is the leading cause of death among all people in 79 cities. It is the leading cause of death among women in 15 cities. These include New York City and Miami, Florida.
Doctors in the United States first noted AIDS 14 years ago in homosexual men in New York and California. In the United States AIDS spread first among homosexual men. Then it appeared in people who shared needles to put illegal drugs into theft blood. It also appeared in people who had received infected blood products at hospitals. The AIDS virus is spread through the exchange of infected blood or body fluids released during sexual activity. It also is spread by having sexual relations with someone who bas the virus. And it is spread by sharing drug needles that have infected blood on them.
Health officials in the United States believe that public education is the best way to limit the spread of AIDS. In the past few years, public programs have taught children and adults the facts about AIDS. Teenagers and adults have been taught how to protect against AIDS, One method is to use rubber devices called condoms during sexual relations.
More than 440 thousand people in the United States have gotten AIDS since the disease was first recognized. More than 250 thousand of them have died. Facts about AIDS are collected by the Centers for Disease Control and Prevention in Atlanta, Georgia. Harold Jaffe is an official there. Dr. Jaffe says the effect of AIDS on American society is greater than the numbers of death. This is because AIDS mainly kills young people—the future of the nation.
AIDS has created many kinds of reactions in America. Many people are frightened by the threat of AIDS. Some have changed their sexual activity to reduce their chances of getting the disease. Some hate and fear people with AIDS. Others have great sympathy for people living with the disease. AIDS activists have tried to reduce the public's fear of people with AIDS. They want to show that people with AIDS are just like other people. Private groups have done a lot to help people with AIDS. They organize support groups where people with AIDS and their families can discuss their problems. These groups also have established many special centers where people with AIDS can receive treatment.
Many
A．Leave it vacant.B．Rent it to the nm she's talking with.C．Sublet it to Jim Thomas.D．A
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