While other animals use a limited range of sounds or signals to communicate, humans have developed complex systems of language that are used to ensure survival, to express ideas and emotions, to tell stories and remember the past. and to negotiate with one another. Oral (spoken) language is a feature of every human society or culture. Experts studying ancient cultures have several theories about how human language began and developed. The earliest language systems probably combined vocal(声音的) sounds with hand or body signals to express messages. Some words may be similar to natural sounds. Others may have come from expressions of emotion, such as laughter or crying. Language, some theorists believe, is a result of group activities, such as working together or dancing.
Over 6000 languages and major dialects are A. They combined vocal sounds with hand or body signals to express messages. B. Some words may be similar to natural sounds. C. Others may have come from expressions of emotion, such as laughter or crying. D. The language, some theorists believe, is a result of individual activities, such as working together or dancing.
[单项选择] Passage Four
No other country spends what we do per
capita for medical care. The care available is among the Best technically, even
if used too lavishly and thus dangerously, but none of the countries that stand
above us in health status have such a high proportion of medically
disenfranchised persons. Given the evidence that medical care is not that
valuable and access to care is nor that had, it seems most unlikely that our bad
showing is caused By the significant proportion who are poorly served. Other
hypotheses have greater explanatory power: excessive poverty, both actual and
relative, and excessive affluence. Excessive poverty is probably
more prevalent in the U. S. than in any of the countries that have a better
infant mortality rate and female life expectancy at birth. This is probably true
also for all but four or five of the coun A. the availability of medical care services B. the genetic endowment of individuals C. the nation’s relative position in health status D. an individual’s own behavior
[单项选择]Passage 4
No other country spends what we do per capita for medical care. The care available is among the best technically, even if used too lavishly and thus dangerously, but none of the countries that stand above us in healthy status have such a high proportion of medically disenfranchised persons. Given the evidence that medical care is not that valuable and access to care not that bad, it seems most unlikely that our bad showing is caused by the significant proportion who are poorly served. Other hypotheses have greater explanatory power: excessive poverty, both actual and relative, and excessive affluence.
Excessive poverty is probably more prevalent in the U. S. than in any of the countries that have a better infant mortality rate and female life expectancy at birth. This is probably true also for all but four or five of the countries with a longer male life expectancy. In the notably poor countries, that exceed us in male survival, difficult living conditions are a A. Which is the most powerful influence on the health status of a population B. Which nation in the world leads in health status C. Is the life expectancy of males in the U.S. longer than of females D. What are the most important genetic factors influencing the health of an individual
[单项选择]PASSAGE ONE
The other day my son asked me if he could ride up to his elementary school on his bike and meet his friend. He wanted the both of them to ride back to our house so they could play video games and jump on the trampoline. I have to admit, part of me wanted to say no. We can go pick him up or his parents can bring him over here, I thought. But my son is eleven years old now. And after all, I do let him ride his bike to school. But I also drive my daughter to school and I can see him on the way, making sure he is getting there safely.
My husband thinks I am too overprotective. I don’t care to let my children walk anywhere without one of us going along. As you pull out of our neighborhood, there is a shopping center across the street.My son always asks if he can ride his bike or walk over to the drugstore by himself. But crossing that street is just too dangerous. The cars fly around the corner like they’re driving in a car race. What if he gets hit What is some teenage bull A. drive his son to school to ensure safety. B. follow his son all the way to school and back C. give his son more freedom in deciding what to do D. ask the other boy’s parents to bring him over here
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