The earnings of women are well below that of men () educational differences that are diminishing between the two sexes.
A.although
B.though
C.despite of
D.in spite of
A.although
B.though
C.despite of
D.in spite of
A、cardiac
B、lower esophageal
C、pyloric
D、ileocecal
After the peak year of 1957, the birth rate in Canada began to decline. It continued falling until in 1966 it stood at the lowest level in 25 years. Partly this decline reflected the low level of births during the depression and the war, but it was also caused by changes in Canadian society. Young people were staying at school longer; more women were working; young married couples were buying automobiles or houses before starting families; rising; living standards were cutting down the size of families. It appeared that Canada was once more falling in step with the trend toward smaller families that had occurred all through the Western world since the time of the Industrial Revolution.
Although the growth in Canada's population had slowed down by 1966 (the increase in the first half of the 1960's was only nine percent), another large population wave was coming over the horizon. It would be composed of the children who were born during the period of the high birth rate prior to 1957.
What is the main idea of the passage?
A.Educational changes in Canadian society.
B.Canada during the Second World War.
C.Standards of living in Canada.
D.Population trends in postwar Canada.
A.that
B.what
C.which
D.whose
The growing interest of consumers in the safety and nutritional quality of the typical North American diet is a welcome development. However, much of this interest has been sparked by sweeping claims that the food supply is unsafe or inadequate in meeting nutritional needs. Although most of these claims are not supported by scientific evidence, the greater number of written material advancing such claims make it difficult for the general public to sep arate fact from fiction. As a result, claims that eating a diet consisting entirely of organically grown foods prevents or cures disease or provides other benefits to health have become widely publicized and form. the basis for folklore.
Almost daily the public is surrounded by claims for "no-aging" diets, new vitamins, and other wonder foods. There are numerous unsubstantiated reports that natural vitamins are superior to synthetic ones, that crops grown with organic fertilizers are nutritionally superior to chose with chemical fertilizers, that untreated grains are better than fumigated grains, and the like.
One thing that most organically grown food products seem to have in common is that they cost more than conventionally grown foods. But in many cases consumers are misled if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods. So there is real cause for concern ff consumers, particularly those with limited incomes, distrust the regular food supply and buy only expensive organic foods instead.
The author implies that there is cause for concern if consumers with limit ed incomes buy organic foods instead of conventionally grown foods be cause ______ .
A.organic goods can be more expensive but are often no better than conventionally grown foods
B.many organic foods are actually less nutritious than similar conventionally grown foods
C.conventionally grown foods are more readily available than organic foods
D.too many farmers will stop using conventional methods to grow food crops
The sensation of sound involves a variety of factors in addition to its peak level. Advertisers are skilful 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 may 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 commercials 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 ______.
A.does not exceed that of programs
B.is greater than that of programs
C.varies over a large range than that of programs
D.is less than that of programs
When the new students are finally【C10】______ ,there may be one more step they have to【C11】______ before registering for classes and【C12】______ to work. Many colleges and universities【C13】______ an orientation program for new students.【C14】______ these programs, the young people get to know the【C15】______ for registration and student advising, university rules, the【C16】______ of the library and all the other【C17】______ services of the college or university.
Beginning a new life in a new place can be very【C18】______ . The more knowledge students have 【C19】______ the school, the easier it will be for them to【C20】______ to the new environment. However, it takes time to get used to college life.
【C1】
A.as
B.after
C.since
D.before
A.empty
B.vacuum
C.hollow
D.vacant
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