A．His family business failed.

　　　B．He hoped to make his son a dramatist.

　　　C．He was attracted by the "Great American Dream".

　　　D．He suffered from severe hunger in his home country.

　　　6．What do we learn about Willy Loman in the play Death of a Salesman?

　　　A．He is regarded as a hero by his colleagues.

　　　B．He is a victim of the American system.

　　　C．He runs the Wagner Company.

　　　D．He treats his employer badly.

　　　7．After it was first staged, Death of a Salesman _____.

　　　A．achieved huge success

　　　B．won the first Tony Award

　　　C．was warmly welcomed by salesmen

　　　D．was severely attacked by dramatists

　　　8．What is the text mainly about?

　　　A．Arthur Miller and his family.

　　　B．The awards Arthur Miller won.

　　　C．Arthur Miller and his best-known play.

　　　D．The hardship Arthur Miller experienced.

　　　 The ocean bottom, a region nearly 2.5 times greater than the total land area of the earth, is even today largely unexplored. Until about a century ago, the deep ocean floor was completely inaccessible and hidden beneath waters averaging over 3,600 meters deep. Totally without light and in the case of intense pressures hundreds of times greater than at the earth's surface, the deep-ocean bottom is a strange environment to humans, in some way, as fighting and remote as the outer space.

　　　Although researchers have taken samples of deep-ocean rocks for over a century, the first detailed global study of the ocean bottom did not actually start until 1969, with the beginning of the National Science Foundation's Deep Sea Drilling Project(DSDP). Using techniques first developed for the offshore oil and gas industry, the DSDP's drill ship, the Glomar Challenger, was able to maintain a steady position on the ocean's surface and drill very deep waters, taking samples of rocks from the ocean floor.

　　　The Glomar Challenger completed 96 voyages in a 15-year research program that ended in November 1983. During this time, it sailed 600,000 kilometers and took almost 20,000 samples of rocks around the world. Those samples have allowed geologists to reconstruct what the planet looked like hundreds of millions of years ago and to make out what it will probably look like millions of years in the future. Today, largely on the strength of evidence gathered during the Glomar Challenger's voyages, nearly all earth scientists agree on the theories of plate tectonics (构造学) and continental drift that explain many of the geological processes.

　　　The sample of rocks drilled by the Glomar Challenger has also provided a climatic record stretching back hundreds of millions of years. The information of past climatic change can be used to predict the future climate.

　　　9．What does the underlined word "inaccessible" in paragraph1 mean?

　　　A．unrecognizable. B．unreachable.

　　　C．unusable. D．unreasonable

　　　10．The Deep Sea Drilling Project was significant because it was _____.

　　　A．an attempt to find new sources of oil and gas

　　　B．supported entirely by the gas and oil industry

　　　C．conducted by geologists from all over the world

　　　D．the first detailed exploration of the ocean bottom

　　　11．What can we know about the Glomar Challenger?

　　　A．It provided a record of past climatic change.

　　　B．It took almost 600,000 samples of rocks

　　　C．It made its first DSDP voyage in 1968.

　　　D．It has gone on over 100 voyages.

　　　 What do you do when you need to look something up? Go to the library? Open an encyclopedia(百科全书)? Click onto the Internet? These days, most people go straight to Wikipedia, the online encyclopedia. But how reliable is it?

　　　There's no denying the popularity and usefulness of Wikipedia. It attracts as many as 78 million visitors every month, and the site is available in more than 270 different languages. It's one of the most comprehensive resources available, which includes almost all details, facts and information that may be concerned. It's got much more information than an ordinary encyclopedia. The site is updated on a daily basis by thousands of people around the world. Anyone with an Internet connection can log on and edit the contents or add a new page. And you don't need any formal training.

Of course, there are some controls. Wikipedia has a team of more than 1,500 administrators who check for false information. And main targets for harmful comments(such as politicians) are off-limits to