第1题:
The principal factor depressing life expectancy in developing countries has always been the high death rate for infants and children. The World Bank studies suggest that as much as two thirds of the difference in life-spans between people in developed countries and those in developing ones can be traced to differences in survival rates for children under five. It is here where the most improvement has come. According to UN estimates, significant regional drops in infant mortality - ranging from 25 percent to 60 percent and centering near 40 percent - appear to have taken place between the late 1950s and the late 1970s in northern Africa, Latin America, and Asia. Although sub-Saharan Africa' s mortality trends cannot be quantified with confidence, there is reason to believe that life expectancy has risen and infant mortality has declined in that region as well. There is little doubt that population growth has accelerated in sub-Saharan Africa since the 1950s; in fact, sub-Saharan Africa is widely thought to have the highest rate of population growth of any major region in the world. Only a small portion of that acceleration is likely to have been caused by increases in fertility (and increases in fertility, insofar as they have occurred, may also imply improvements in health and nutrition).
Mortality, of course, is not a perfect measure of nutritional change. Improved nutrition is only one of a number of forces that have been pushing down death rates in developing countries. Others include the upgrading of hygiene and sanitation; the extension of public health services; medical innovations; improvements in education, communications, transportation, and, in some areas, civil order. Even so, the extent to which improvements innutrition—both direct and indirect—have reduced mortality in developing countries has frequently been underestimated. For example, Sri Lanka experienced an abrupt jump in life expectancy shortly after the Second World War. Whereas this was long described as a "technical fix"—a triumph of DDT over the anopheles mosquito—years later researchers realized that abrupt and rapid drops in mortality had also taken place in Sri Lanka' s highlands, or "dry zones", where malaria had never been a serious problem. In both highlands and lowland regions health improved in tandem with access to food.
According to the author, life expectancy in developing countries is not high mainly because developing countries______.
A.have a low standard of living
B.have no public health services
C.have no public and private hygiene and sanitation
D.have low survival rates for infants and children
第2题:
A.percents...lives
B.percents...live
C.percent...live
D.percent...lives
第3题:
从下面方框中选择适当的词填入短文中,使短文通顺正确(注意有些词要用适当的形式)。方框中有两个多余的词。 elephantrainblack grow snow bebecome
This country is far away from China, Like China, it is also a developing country. It has a population of about 45 million. Of these, 76 percent are (76)____________ and 12 percent white. It has a warm climate (气候). Either it never rains, or it (77) __________ a lot!. It is the world’s biggest producer of gold, and it sells diamonds(钻石) to other countries. It (78) ____________ a lot of fruits, including oranges, pears, and grapes, and it makes wine.
There (79)_________ lots of large forests where you can see a lot of wildlife(野生动物), including lions, (80) ___________, zebras, and giraffes. Many people like to go and travel in this country. Can you guess the name of this country.
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第6题:
Your Bean Steak (素肉排), Sir!
What sort of food are we likely to be eating in the year 2000?
Most people, when you ask them a question like that, either say: " There won't be any left, " or "Whatever it is, there won't be much taste in it." Of course, there are good reasons for being worried about the world's food supplies in the future.Nevertheless, not all the experts share these worries.
For one thing, although the world's population is rising fast, food production is keeping pace with it, even in developing countries.It is therefore argued that the main reason why people are hungry is not that there is a world food shortage but that methods of cultivation are not sufficiently advanced in some areas and the food is not fairly distributed ( 分配 ).
This does not mean, however, that our diet ( 饮食 ) will go on being the same.In many industrialized countries, people feed animals with grain to produce high-quality beef, even though the grain would feed the human population, and use fishmeal to fatten pigs to improve the quality of bacon.While not many of us would like fishmeal for lunch, its nutritional value is high and the unattractive fish it is made from can be presented to the public in colorful packets of fish fingers.
By the year 2000, many of these problems will have been solved.Scientists are already capable of making steaks from soy beans.It is quite obvious that there will still be enough to eat, if we are not too particular about where the food comes from and what it is made of.
1.Most people believe that food supplies in the future().
A、will become a very serious problem
B、will be the same as they are today
C、will be enough in quantity but not good in quality
D、will be much better than they are today
2.The reason why people are hungry in today's world is().
A、poor farming methods and bad distribution
B、slow growth of food production
C、food shortages all across the world
D、fast rising population
3.The word "bacon" in Line 5, Para.3 most probably is().
A、a kind of "meat" made from grain
B、meat made from fish
C、food for fish
D、meat made from pigs
4.The word "particular" in Line 4, Para.4 means().
A、special
B、choosy
C、detailed
D、very exact
5.The title of this passage suggests that().
A、food in the future will be tasteless
B、there will be worldwide food shortages
C、diet in the future will be very different
D、science is making rapid progress
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第8题:
The advantages and disadvantages of a large population have long been a subject of discussion among economists. It has been argued that the supply of good land is limited. To feed a large population, poor land must be cultivated and the good land worked intensively. Thus, each person produces less and this means a lower average income than could be obtained with a smaller population. Other economists have argued that a large population gives more chance of development of facilities such as ports, roads and railways, which are not likely to be built unless there is a big demand.
One of the difficulties in carrying out a worldwide birth control program lies in the fact that of ficial attitudes to population growth vary from country to country depending on the level of industrial development and the availability of food and raw materials. In the developing country where a vastly expanded population is pressing hard upon the limits of food, space and natural resources, the first concern of government will be to set a limit on the birthrate, whatever the final result may be. In a highly industrialized society the problem may be more complex. A decreasing birth rate may lead to unemployment because it results in a declining market for manufactured goods.
When the pressure of population on housing declines, prices also decline and building industry grow weaker. Faced with concern such as these, the government of a developed country may well prefer to see a slowly increasing population, rather than one which is stable or in decline.
(1)The main topic of this article is _____________.
A、environment protection
B、population growth
C、environment and economy
D、climate changing
(2) The passage says that a small population may lead to _____________.
A、higher production, but a lower average income
B、lower production and lower average income
C、higher production and a higher average income
D、lower production, but a higher average income
(3) According to the passage, the use of birth control perhaps is good for_____________.
A、a developing country
B、a developed country
C、the whole world
D、each nation with a big population
(4) In a developed country, people will perhaps be unemployed if the birthrate _____________.
A、goes up
B、goes down
C、remains stable
D、is out of control
(5) The author is aiming to show that_____________.
A、humans will run out of their food supply in the future
B、it is necessary for humans to carry out a worldwide plan for birth control
C、different nations have different views of population growth
D、we need to take necessary measures to prevent the overuse of natural resources.
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