t in the past century and only 5 000～7 200 tigers still remain in the wild-compared with nearly ten times that many at the start of the century.
WWF published an update Feb. 11, 1999 of their study-Wanted Alive: Tigers in the Wild, marking the end of the Chinese Year of the Tiger.
The report states that in spite of the great efforts over the past year, much remains to be done to prevent the tiger from becoming extinct early
next century. If governments do not fight against unlawful hunting and get rid of demand for tiger products the tiger will go to extinction, says WWF.
“We cannot relax for one moment if we are to make it certain that tigers will still exist in the wild by the next Chinese Year of the Tiger in 2010.” Said Elizabeth Kemt, species conservation information manager at WWF International and one of the authors of the report.
Three of the subspecies of tiger-the Bali, Caspian and Javan tigers are extinct. The South China tiger faces the same end as only 20 or 30 are known to remain in the wild, down from 4 000 in 1950s.
56. This passage tells us that.()
A. WWF is a government organization of China
B. there are altogether two Chinese Years of the Tiger:1999 and 2010
C. Elizabeth Kemf didn’t join the authors in writing the report but she agreed to their opinion
D. if the twenty to thirty South China tigers were killed, probably no
tiger of this kind would remain in the wild
57. The word “extinct” in the fourth paragraph probably means.()
A. fewer
B. lost
C. dead
D. alive
58. Which of the following may be the best title for this passage?()
A. How to Protect Tigers
B. Tigers Are Disappearing from the World.
C. Tigers in the Wild
D. The Chinese Year of the Tiger
B
The advantage and disadvantage of a large population have long been a subject of discussion. It has been argued that the supply of good land is limited. To feed a large population, inferior land must be cultivated and the good land worked intensively. Thus each person produced less and this means a lower average income than could be obtained with a small population. Other economists have argued that a large population gives more scope for specialization and the development of facilities such as ports, roads and railways, which are not likely to be built unless there is a big demand to justify them.
One of the difficulties on carrying out world birth control program lies in the fact that official 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, it will be first concern of government to place a limit on the birthrate, whatever the consequences may be. In a highly industrialized society the problem may be more complex. A decreasing birthrate 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 the building industry is weakened.
Faced with considerations such as these, the government of a developed country may well prefer to see slowly increasing population, rather than one which is stable or declines.
59. Small population may mean.
A. higher productivity, but a lower average income
B. lower productivity, but a higher average income
C. lower productivity and a lower average income
D. higher productivity and a higher average income
60. According to the passage, a large population will provide a chance for developing.()
A. agriculture
B. transport system
C. industry
D. national economy
61. In a developed country, people will perhaps go out of work if the birthrate.()
A. goes up
B. goes down
C. remains stable
D. is out of control
62. According to the passage, slowly rising birthrate perhaps is good for.()
A. a developing nation
B. every nation with a high population
C. a developed nation
D. every nation with a small population
63. It is no easy job to carry out a general plan for birth control throughout the world because. ()
A. there are too many underdeveloped countries in the world
B. underdeveloped countries have low level of industrial development
C. different governments have different views of the question
D. even developed countries have complex problemsC
American doctors say that mothers who smoke cigarettes before their babies are born may slow the growth of their babies’ lungs. They say reduced lung growth could cause the babies to suffer breathing problems and lung disease later in life. Doctors
in Boston, Massachusetts studied 1,100 children. The mothers of some of the children smoked, the other mothers did not. Doctors found that the lungs of the children whose mothers smoked were 8% less developed than the lungs of the children whose mothers did not smoke, and that the children whose mother smoked developed 20% more cold and breathing diseases than other children later in life.
Another recent study found that children had a greater chance of developing lung cancer if their mothers smoked. The study also showed that the danger of lung cancer increased only for sons and not for daughters, and that the father’s smoking did not affect a child’s chance of developing lung cancer.
64. Mother who smokes before her child is born may .()
A. slow the growth of her baby’s lung
B. cause her baby to suffer breathing problems and lung disease later in life
C. make her child develop lung cancer
D. All of above are right
65. Doctors in Boston studied 1 100 children to.()
A. examine whether these children were healthy
B. find out whether their mothers had smoked
C. find why these children suffered breathing problems and lung disease
D. look into the effect that mother’s smoking had on their children
66. Suppose John’s father was a heavy smoker, so was Mary’s mother. According this passage, .()
A. John is more likely to develop lung cancer
B. Mary is more likely to develop lung cancer
C. John and Mary have the same chance to develop cancer
D. neither John nor Mary has the chance to develop cancer
67. This passage is to()
A. warn us of the danger of smoking before children
B. warn people with breathing problems not to smoke
C. warn us that mothers who smoke may affect their children’s health
D. warn us that fathers who smoke may affect their children as mothers
D
It may strange that ice itself sometimes can protect crops from frost(霜冻). Some growers actually spray(喷撒) their crops with water on a freezing night. Water freezes quickly on the plants and then a strange thing happens. As long as ice stays wet, it can’t get colder than 0℃, a temperature many plants can stand. If the ice ever became entirely frozen and dry, it might drop many degrees lower, ruining(毁坏) the plants. But continually spraying water on the ice, the growers keep it from going below 0℃ even if the air is much colder. This may be unbelievable but it saves the plants.
68.The best title would be .()
A. Harm Done by Frost
B. Ice Can Be Nice
C. Battle of the Farmer
D. The Helpless Plant
69.The writer writes the passage to.()
A. explain why some plants can stand ice
B. show how ice forms
C. show that frost can be prevented
D. tell us how to store crops longer
70.Ice van save plants rather than destroy them unless.()
A. ice stays wet
B. ice becomes entirely frozen and dry
C. growers spray water continually
D. ice is above 0℃
71.Why do growers spray water on the plants continually? Because.()
A. they let ice go below 0℃
B. if not, ice will be completely frozen and dry
C. water can freeze quickly on the plants
D. if not, a strange thing will happen
E
Parents whose children show a special interest in a particular sport feel very difficult to make a decision about their children’s careers. Should they allow their children to train to become top sports men and women? For many children it means starting school work very young, and going out with friends and other interests have to take a second place. It’s very difficult to explain to a young child why he or she has to train five hours a day, even at the weekend, when most of his or her friends are playing.
Another problem is of course money. In many countries money for training is available from government for the very best young sportsmen and women. If this help can not be given, in means that it is the parents who have to find the time and the money to support their child’s development-and sports clothes, transport to competitions, special equipment, etc. can all be very expensive.
Many parents are worried that it is dangerous to start serious training in a sport at an early age. Some doctors agree that young muscles may be damaged by training before they are properly developed. Professional trainers, however, believe that it is only by training young that you can reach the top as a suc
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