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第一篇Why So Many Childr"的相关试题:
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第一篇
Why So Many Children
In many of the developing countries in Africa and Asia,the population is growing fast.The reason for
this is simple.Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The
majority of these women are poor,without the food or resources to care for their families.Why do they have so
many children?Why don't they limit the size of their families?There are several reasons for this.
One reason is economic.In a traditional agricultural economy,large families are helpful.Having more
children means having more workers in the fields and someone to take care of the parents in old age.In an
industrial economy,the situation is different.Many children do not help a family;instead,they are an ex-
pense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was
industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely
agricultural country with a high birth rate.After World War II,Italy's economy was rapidly modernized and
industrialized. By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.
However,the economy is not the only important factor that influences birth rate.Saudi Arabia,for exam-
pie,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the
world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia,on the other hand,are
poor countries,with largely agricultural economies,but they have recently reduced their population growth.
Clearly,other factors are involved.The most important of these is the condition of women.A high birth
rate almost always goes together with lack of education and low status for women.This would explain the high
birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few
possibilities outside the home.On the other hand,the improved condition of women in Mexico,Thailand,and
indonesia explains the decline in birth rates in these countries.Their governments have taken measures to
provide more education and opportunities for women.
Another key factor in the birth rate is birth control.Women may want to limit their families but have no
way to do so.In countries where governments have made birth control easily available and inexpensive,birth
rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,
Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning
their families.These trends show that an effective program to reduce population growth does not have to de-
pend on better economic conditions.
Saudi Arabia is mentioned because it shows that_________.
A.the most important factor influencing birth rate is the economy
B.women who have a high income usually have few children
C.the birth rate depends on per capita income
D.factors other than the economy influence birth rate
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Why So Many Children
In many of the developing countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate—from 3 .0 to 7.0 chil-dren per woman.The majority of these women are poor,without the food or resources to care for their families .Why do they have so many children?Why don't they limit the size of their fami-lies?The answer may be that they often have no choice.There are several reasons for this.
One reason is economic .In a traditional agricultural economy,large families are helpful. Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different.Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate .This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate .After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.
However,the economy is not the only important factor that influences birth rate.Saudi Ara-bia,for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia,on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.
Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This
would explain the high birth rate of Saudi Arabia .There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the im-proved condition of women in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and oppotunities for women.
Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so．In countries where governments have made birth control easily available and inexpensive,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India，as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families．
These trends show that an effective program to reduce population growth does not have to de-pend on better economic conditions.It can be effective if it aims to help women and meet their needs .Only then,in fact,does it have any real chance of success．
In Mexico,Thailand,and Indonesia,the government____.
A.is not concerned about the status of women
B.has tried to industrialize the country rapidly
C.does not allow women to work outside the home
D.has tried to improve the condition of women
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第一篇
Why Don ' t Babies Talk Like Adults?
Over the past half-century,scientists have settled on two reasonable theories related to babytalk.One
states that a young child's brain needs time to master language,in the same way that it does to master other
abilities such as physical movement. The second theory states that a child's vocabulary level is the key fac-
tor. According to this theory,some key steps have to occur in a logical sequence before sentence formation
occurs.Children's mathematical knowledge develops in the same way.
In 2007,researchers at Harvard University,who were studying the two theories,found a clever way to
test them.More than 20,000 internationally adopted children enter the U.S.each year. Many of them no lon-
ger hear their birth language after they arrive,and they must learn English more or less the same way infants
do一that is,by listening and by trial and error. International adoptees don't take classes or use a dictionary
when they are learning their new tongue and most of them don't have a well-developed first language.All of
these factors make them an ideal population in which to test these competing hypotheses about how language
is learned.
Neuroscientists Jesse Snedeker,Joy Geren and Carissa Shafto studied the language development of 27
children adopted from China between the ages of two and five years.These children began learning English
at an older age than US natives and had more mature brains with which to tackle the task.Even so,just as
with American-born infants,their first English sentences consisted of single words and were largely bereft（缺
乏的）of function words , word endings and verbs. The adoptees then went through the same stages as typical
American-born children,though at a faster clip.The adoptees and native children started combining words in
sentences when their vocabulary reached the same sizes,further suggesting that what matters is not how old
you are or how mature your brain is,but the number of words you know.
This finding一that having more mature brains did not help the adoptees avoid the toddler-talk stage一
suggests that babies speak in babytalk not because they have baby brains,but because they have only just
started learning and need time to gain enough vocabulary to be able to expand their conversations.Before
long,the one-word stage will give way to the two-word stage and so on. Learning how to chat like an adult is
a gradual process.
But this potential answer also raises an even older and more difficult question.Adult immigrants who
learn a second language rarely achieve the same proficiency in a foreign language as the average child raised
as a native speaker. Researchers have long suspected there is a"critical period"for language development,
after which it cannot proceed with full success to fluency.Yet we still do not understand this critical period or
know why it ends.
When the writer says"critical period",he means a period when________.
A.studies produce useful results
B.adults need to be taught like children
C.language learning takes place effectively
D.immigrants want to learn another language
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第一篇
Approaches to Understanding Intelligences
It pays to be smart,but we are not all smart in the same way.You may be a talented musician,but you might not be a good reader.Each of us is different.
Psychologists disagree about what is intelligence and what are talents or personal abilities.Psychologists have two different views on intelligence.Some believe there is one general intelligence.Others believe there are many different intelligences.
Some psychologists say there is one type of intelligence that can be measured with IQ tests.These psychologists support their view with research that concludes that people who do well on one kind of test for mental ability do well on other tests.They do well on tests using words,numbers,or pictures.They do well on individual or group tests,and written or oral tests.Those who do poorly on one test,do the same on all tests.
Studies of the brain show that there is a biological basis for general intelligence.The brains of intelligent people use less energy during problem solving.The brain waves of people with higher intelligence show a quicker reaction.Some researchers conclude that differences in intelligence result from differences in the speed and effectiveness of information processing by the brain.
Howard Gardner,a psychologist at the Harvard School of Education,has four children.He believes that all children are different and shouldn't be tested by one intelligence test.Although Gardner believes general intelligence exists,he doesn't think it tells much about.the talents of a person outside of formal schooling.He thinks that the human mind has different intelligences.These intelligences allow us to solve the kinds of problems we are presented with in life.Each of us has different abilities within these intelligences.Gardner believes that the purpose of school should be to encourage development of all of our intelligences.
Gardner says that his theory is based on biology.For example,when one part of the brain is injured,other parts of the brain still work.People who cannot talk because of brain damage can still sing.So,there is not just one intelligence to lose.Gardner has identified 8 different kinds of intelligence:linguistic,mathematical,spatial, musical , interpersonal,intrapersonal , body-kinesthetic（身体动觉的）,and naturalistic.
Gardner thinks that his theory has a______.
A.musical foundation
B.biological foundation
C.intrapersonal foundation
D.linguistic foundation
