题目内容
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[单选题]
About half the population in the poor country is still _______.
A.literature
B. educated
C. intellectual
D. illiterate
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.literature
B. educated
C. intellectual
D. illiterate
如果结果不匹配，请 联系老师 获取答案
更多“About half the population in t…”相关的问题
World Population Growth and Distribution
The United Nations, an accepted authority on population levels and trends, estimates that the world population reached 6 billion in 1999, and is increasing annually by more than 77 million persons. The rate of increase, 1.3 percent per year, has fallen below the peak rate of 2 percent per year attained by 1970. By the late 2040s, the UN estimates, the growth rate will have fallen to about 0.64 percent annually, at which time more than 50 countries will experience negative growth.
A. Past and Present Growth
Estimates of world population before 1900 are based on fragmentary (零散的) data, but scholars agree that, for most of human existence, long-run average population growth approached approximately 0.002 percent per year, or 20 per million inhabitants. According to UN estimates, the population of the world was about 300 million in the year AD 1, and it took more than 1,500 years to reach the 500 million mark. Growth was not steady but was marked by oscillations (摆动) dictated by climate, food supply, disease, and war.
Starting in the 17th century, great advances in scientific knowledge, agriculture, industry, medicine, and social organization made possible rapid acceleration in population growth. Machines gradually replaced human and animal labor. People slowly acquired the knowledge and means to control disease. By 1900 the world population had reached 1.65 billion, and by 1960 it stood at 3.04 billion.
Beginning about 1950, a new phase of population growth was ushered in when famine and disease could be controlled even in areas that had not yet attained a high degree of literacy or a technologically developed industrial society. This happened as a result of the modest cost of importing the vaccines (疫苗), antibiotics, insecticides, and high-yielding varieties of seeds produced since the 1950s. With improvements in water supplies, sewage-disposal facilities, and transportation networks, agricultural yields increased, and deaths from infectious and parasitic diseases greatly declined. Life expectancy at birth in most developing countries increased from about 35～40 years in 1950 to 66 years by 2000. The rapid decline in deaths among people who maintained generally high fertility rates led to annual population growth that exceeded 3.1 percent in many developing nationsa--rate that doubles population size in 23 years.
B. Regional Distribution
As of 2000, 1.2 billion people lived in the developed nations of the world, and 4.9 billion people lived in the less-developed countries. By region, over half the world's population was in East and South Asia; China, with 1.3 billion inhabitants, and India, with some 1 billion, were the dominant contributors. Europe and the countries of the former USSR contained 14 percent, North and South America made up 14 percent, Africa had 13 percent, and the Pacific Islands had about 1 percent of world population.
Differences in regional growth rates are altering these percentages over time. Africa's share of the world population is expected to more than double by the year 2025. The population of South Asia and Latin America is expected to remain nearly constant; in other regions, including East Asia, the population is expected to decline appreciably. The share of the present developed nations in world population--20 percent in 2000--is expected to fall to 15 percent by 2025. Nine out of every ten persons who are now being added to the world's population are living in the less-developed countries.
C. Urban Concentration
As a country develops from primarily an agricultural to an industrial economy, large-scale migration of rural residents to towns and cities takes place. During this process, the growth rate of urban areas is typically double the pace of overall population increase. Some 29 percent of the world population was living in urban areas in 1950;
A．Y
B．N
C．NG
A. Less than ten minutes.
B. Half an hour.
C. About twenty minutes.
D. Forty-five minutes.
A．is under discussion
B．is about to be set up
C．has been put into effect
D．has been perfected
A. Two to four months.
B. About three weeks.
C. At least half a year.
D. Two years or more.
A．She has half finished filling out the form.
B．She doesn't remember to fill out the form.
C．She is glad that the man might help her.
D．She feels frustrated about filling out the form.
A．The plane was about an hour late.
B．The plane was about half an hour late.
C．The old man would not be late for his lecture.
D．The management of the airport was inefficient.
根据录音，选择合适的答案（） 查看材料
A.Buy a new car that saves fuel．
B.Rent a car for about half a month．
C.Make a complaint about a car．
D.Test drive a new car．
ted States.
A、1690s
B、1790s
C、1890s
D、1990s
A．were eager to win international acceptance
B．felt guilty for their crimes in World WarⅡ
C．had been pressured to keep silent about it
D．were afraid of offending their neighbors
听力原文：W：I'm sorry you had to wait for me．I ran out of gas about half way here．
M：That's too bad．Unfortunately，we can't go in until intermission now．
Q：What will these people have to do？
(15)
A．Miss part of the performance.
B．Find their seats in the theater.
C．Enter the mission.
D．Look for a gas station.
What do we learn about Frito-Lay from Paragraph 2？
A．Its products use to be popular among overseas consumers.
B．Its expansion has caused fierce competition in the snack marker.
C．It gives half of its annual profits to its parent company.
D．It needs to turn to the word market for development
