题目内容
Man cannot go on increasing his number at the present rate. In the【56】30 years man will face a period of crisis.【57】experts believe that there will be a widespread food【58】. Other experts think this is【59】pessimistic (悲观的), and that man can prevent things from【60】.
【61】thing that man can do is to limit the【62】of babies born. The need【63】this is obvious, but it is not【64】to achieve. People have to be【65】to limit their families. In the countries of the population【66】, many people like big families. The parents think that this【67】a bigger income for the family and ensures there will be someone in the family who will look【68】them in old age.
Several governments have【69】birth control policies in recent years.【70】them are Japan, China, India and Egypt. In some【71】the results have not been successful. Japan has been an【72】. The Japanese adopted a birth control policy in 1948. People were【73】to limit their families. The birth【74】fell from 34.3 per thousand per year to about 17.0 per year【75】present.
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America put more people in prison in the 1990s than in any decade in its history. That started a debate over the wisdom of spending billions of dollars to keep nearly 2 million people locked up. According to statistics, the United States ends 1999 with 1983084 men and women in prisons. That shows an increase of nearly 840,000 prisoners during the 1990s and makes the United States the country with the highest prisoner population in the world. With the cost of housing a prisoner at about $20,000 a year the cost in 1999 for keeping all these prisoners behind bars is about $39 billion.
Some experts argue that the money is well spent, saying the cost of keeping prisoners behind bars doesn't seem much in comparison in the 1990s coincided with (与……相一致) a steady drop in the US crime rates. It is reported that serious crime has decreased for seven years in a row. "There are noticeable number of people who don't do crimes because they don't want to go to prison," they say.
There is a heated debate among American experts because ______.
Artificial flowers are used for scientific as well as for decorative purposes. They are made from a variety of materials, such as wax and glass, so skillfully that they can scarcely be distinguished from natural flowers. In making such models, painstaking skill and artistry are called for, as well as thorough knowledge of plant structure. The collection of glass flowers in the Botanical Museum of Harvard University is the most famous in North America and is widely known throughout the scientific world. In all, there are several thousand models in colored glass, the work of two artists-naturalists, Leopold Blaschka and his son Rudolph.
The intention was to have the collection represent at least one member of each flower family native to the United States. Although it was never completed, it contains more than seven hundred species representing 164 families of flowering plants, a group of fruits showing the effect of fungus diseases, and thousands of flower parts and magnified details. Every detail of these is accurately reproduced in color and structure. The models ate kept in locked cases, as they are too valuable and fragile for classroom use.
Which of the following is the best title for the passage？
A．MarchB．techniqueC．benchD．change
A．cabbageB．tasteC．nationD．salesman
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