[简答题]Libraries form a vital part of the world’s systems of communication and education.
They make available knowledge accumulated through the ages. People in all walks of life use library resources in their work. People also turn to libraries to satisfy a desire for knowledge or to obtain material for leisure-time activity. In addition, many people enjoy book discussions, concerts, film programs, lectures, story hours, and a variety of other activities provided by libraries. Libraries also play an important role in preserving a society’s cultural heritage(遗产). The library ranks as one of society’s most useful service institutions.
The contents of libraries have changed so much through the years that the word library itself is, in a sense, inaccurate. The word comes from the Latin word liber, which means book. Today’s libraries house many books, of course. However, they also have a wide variety of other materials that communicate, educate, and entertain. These materials include

[简答题]Libraries form a vital part of the world’s systems of communication and education.
They make available knowledge accumulated through the ages. People in all walks of life use library resources in their work. People also turn to libraries to satisfy a desire for knowledge or to obtain material for leisure-time activity. In addition, many people enjoy book discussions, concerts, film programs, lectures, story hours, and a variety of other activities provided by libraries. Libraries also play an important role in preserving a society’s cultural heritage(遗产). The library ranks as one of society’s most useful service institutions.
The contents of libraries have changed so much through the years that the word library itself is, in a sense, inaccurate. The word comes from the Latin word liber, which means book. Today’s libraries house many books, of course. However, they also have a wide variety of other materials that communicate, educate, and entertain. These materials include

[填空题]For many people, electricity is a vital part of everyday life and is often taken for granted. But not everyone has (36) to it. Improving the supply and availability of electricity across the world has (37) scientists for decades. Now, however, technological advances mean that a cheap, safe (38) of electricity may soon be available virtually anywhere on the planet.
The idea is to harness the sun’s energy by using satellites. Of course, solar-powered satellites are not a new idea. But it is only (39) recently that technology has advanced far enough to make the idea a (40) possibility.
The basic idea is that the solar-powered satellites will (41) the energy in sunlight into electricity. The energy will be (42) to earth in the form of microwaves, which will be collected by a (43) known as a microwave collector. A re-conversion plant (44) . The type of solar-powered satellites is

[填空题]

A. worm
B. world
C. form
D. word

[单项选择]White rice is the world’s most popular form office. But it goes through a milling process that removes many nutrients (营养成分). As a result, people who eat a poor diet based on white rice may not get enough vitamin A.
Each year about 250,000 to 500,000 children go blind from vitamin A deficiency. The World Health Organization (WHO) says haft of them die within a year of losing their sight. Vitamin A deficiency is a problem especially in Africa and Southeast Asia.
So scientists thought of an answer. They combined white rice with plant compounds that the body can change into vitamin A. These plant colorings give the rice a golden color.
The scientists also thought of a plan to give away this Golden Rice for free to poor farmers. But the rice cannot be made using traditional methods. The scientists worked for ten years, until 1990, to develop the technology to add genes to rice. Then it took nine more years to get the genes they wanted into the seed.
Professor
A. In 1980
B. In 1990
C. In 2000
D. In 2004

[填空题]

Which part of the world contributed to an increase between 94/95 and 95/96

[单项选择]Although part of the ivory available on world markets was taken from wild elephants that were killed illegally, some ivory is derived from sources that nearly all nations define as legal, such as elephants that have died natural deaths. The world’s few remaining wild elephant herds, therefore, are not endangered when those buying ivory at wholesale make a serious effort to limit their purchases to such legal ivory. The argument above depends on the assumption that
A. wholesale buyers attempting to limit their purchases to legal ivory can reliably distinguish legal from illegal ivory.
B. the demand for products made from legal ivory will continue to grow in the near future.
C. there are currently fewer wholesale sources of legal ivory in the world than there are of illegal ivory.
D. wholesale buyers of ivory products are generally unaware of the reasons for the dwindling world supply of ivory.
E. (E) a continued supply of legal ivory is ensured because elephants reproduce in captivity.

[单项选择]World Wide Web is the part of the Internet that provides sounds, pictures, and moving images in addition to text. The Internet 62 computers and computer networks around the world, but the portion of the network not 63 the World Wide Web (often called the Web, for short) 64 only text information. The Web, 65 , has multimedia capabilities—including graphics, audio, and video. The Web is 66 electronic addresses called Web sites, which contain Web pages that hold the multimedia information. Web sites and their pages 67 in computers connected to the Internet. Tim Berners Lee, an English computer scientist at the European Center for Nuclear Research (CERN) physics laboratory near Geneva, Switzerland, wrote the Web 68 in 1990. The Web became part of the Internet in 1991. The introduction of the Web helped make the Internet 69 and easier to use. Many computer users find the Web’s multimedia content more 70 than text—only conten