题目内容
Liberia, the tiny republic on the west coast of Africa, has long been of interest to the United States. This is partly because it was founded as a sovereign state by little bands of freed slaves from the United States and the West Indians who settled there a little over a century ago, and partly because of its fast- developing rubber plantations.
Only slightly larger than Ohio, Liberia is unique in that it is the only part of the African continent remaining in Negro hands and under Negro control. Its name refers to the new - found liberation of the former slaves who colonized it shores, and whose descendants today rule the little nation. Besides some 2,000,000 primitive natives who live in the tropical inland areas, there are about 70,000 civilized inhabitants with a standard of living patterned after that of the United States or Europe. Only Negroes may be citizens of Liberia.
1. The title that best expresses the main theme or subject of this selection is ________.
A.Rubber from Liberia
B.The west coast of Africa
C.Descendants of the slaves
D.A Negro republic
2. Liberia was settled ________.
A.before the United States
B.twenty-five years ago
C.more than one hundred years ago
D.about eighty years ago
3. The name “Liberia” was chosen because ________.
A.it described the small size of the country
B.the founders had recently been freed from slavery
C.the United States was interested in it
D.rubber was an important crop
4. The citizens of Liberia are ________.
A.of many races
B.American slaves
C.all Negroes
D.British subjects
5. From the selection we may conclude that
A.Liberia has no military
B.the Liberian landscape is similar to that of Ohio
C.the seaports of Liberia are exceptionally good
D.Liberia is important for its export of rubber
提示:
1. 整篇文章说的都是利比里亚,一个由黑人统治的国家。 2. the West Indians who settled there a little over a century ago, 从这句话可以看出一个多世纪以前建立利比里亚 3. Its name refers to the new - found liberation of the former slaves从这句话可以看出应该选择B 4. Only Negroes may be citizens of Liberia.只有黑人可以成为利比里亚的公民。 5. partly because of its fast- developing rubber plantations.美国对他很感兴趣的原因之一就是因为它高速发展的橡胶园
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Scientists have developed a water treatment system that they say is a powerful but simple way to save lives. Four grams of chemicals can treat ten liters of dirty water for a low cost, about ten cents.
Experts say infections from dirty water kill several thousand children in developing countries every day. The Procter and Gamble company has been developing the "PUR Purifier of Water" system since 1995. The company has been working with the United States Centers for Disease control and Prevention(C.D.C.).
C.D.C. researchers tested it in Guatemala, Pakistan and Kenya. Procter and Gamble researcher Greg Allgood says cases of diarrhea(腹泻) in those studies fell by about 50 percent. Researchers from Johns Hopkins University in Maryland tested the system at a refugee camp in Liberia. Mr. Allgood says that study found a reduction of more than 90 percent. Use of the system is being expanded worldwide.
The treatment contains bleach(漂白剂) to kill disease-causing organisms. It also contains something that dirt and other particles stick to. Mr. Allgood says the chemicals can remove lead and other dangerous metals and even agricultural poisons like D.D.T.
Mr. Allgood heads the Children's Safe Drinking Water program at Procter and Gamble. He says about forty million packets of the treatment have been given to countries for free. They have been used in emergencies and in areas with limited supplies of clean water.
Clean water is a limited resource in many parts of the world. Delegates from about 130 nations attended the Fourth World Water Forum last month in Mexico City. Scientists, policy experts and others discussed ways to provide clean water to the world’s poor. Organizers say more than twenty percent of the world population lacks clean drinking water. The final declaration did not go so far as to declare water a human right. But it did say that governments, not private companies, must take the lead in improving the public’s ability to have clean water.
46. What is mainly talked about in this passage?
A. Water pollution around the world.
B. The causes of diarrhea in African countries.
C. A newly developed water treatment system.
D. The Fourth World Water Forum in Mexico City.
47. Which of the following developed the water treatment system?
A. The US Centers for Disease Control and Prevention.
B. The Procter and Gamble Company and C.D.C.
C. The Children’s Safe Drinking Water Program.
D. Johns Hopkins University.
48. Which of the following about the new water treatment system is NOT true?
A. It is effective but very expensive.
B. It was tested in Guatemala, Pakistan and Kenya.
C. It is being expanded worldwide.
D. It can remove dangerous metals in the water.
49. Which of the following shows that the shortage of clean water is a serious problem?
A. Forty million packets of the treatment have been given to countries for free.
B. Delegates from about 130 nations attended the Fourth World Water Forum.
C. Four grams of chemicals can treat liters of dirty water for a low cost.
D. Infections from dirty water kill several thousand children every day.
50. The best title for this article is ______.
A. A Small Packet of Chemicals, a Big Effect on Dirty Water
B. The Procter and Gamble Company and C.D.C.
C. The Shortage of Clean Water
D. How to Cure Diarrhea