摘要： What can be concluded from the last paragraph? A. Technological innovations are helpful but expensive. B. Libraries have budget problems because it is easier to use newspapers. C. Libraries have budget problems because of the many library users. D. Technological equipment makes research easier for the library users. D Many people like the feeling of the gentle wind in spring. Many like to see the falling leaves dancing in the wind in autumn. But sometimes, when the wind becomes a storm, it can be very destructive. A series of such storms struck the US last month and caused very serious damage and human pain. Every year, major storms cause many problems around the world. There is nothing people can do to stop these powerful forces of nature. But new techniques are helping scientists to predicthow, when, and where big storms will happen. The more exact scientists’ warnings are, the better people can prepare for the storms. Predictions are improving. “We’ve gotten better over the years, especially the last few years, says Phil Klotzback, a scientist at an American university. How is a storm formed? Even if scientists know where a storm will happen, winds can suddenly change, carrying the storm to a new direction. “For a hurricane to happen, conditions have to be just right, Klotzback says. First, the ocean water needs to be warm enough so that it evaporates and rises into the air. As it rises, the vaporcools and turns back into liquid. This process gives off heat. This produces energy like an engine that causes winds to increase. It drives the formation of a hurricane. If wind speeds reach 40 miles per hour, the system is called a “ tropical storm , and it gets a name. At 75 miles per hour, it becomes a hurricane. Hurricanes that hit the US start when a thunderstorm forms off the coast Africa. Storms also develop over tropical waters in other parts of the world. On average, 60 or 70 storms form off Africa every year. About 10 of them get names. There are usually about six hurricanes. Two tend to be very big, with winds of 115 miles per hour of higher. The hurricane season lasts from June to November. Ninety percent of all hurricanes hit in August, September and October.
Like business and industry, the academic world is changing with technology advancing．A library is one place where we can see changes．Many innovative(革新的)things are happening in both public and university libraries．Libraries are using new equipment and techniques for research, and librarians are teaching students the new techniques．
One service that some university libraries are now providing is a computer search of materials for students doing research．Before starting a research project, students man check with their library to see if a computer search is worthwhile．This kind of search cannot help with all research projects, but it can save time if the topic is in the computer's database(数据库)．When you are doing a manual(人工的)search for a research paper, you look at all the indexes(索引)suitable for the research topic．You look up the words related to the topic in the indexes．It takes many hours to look up this information and write down the references(参考资料)．A computer search is faster and easier．You and a librarian decide on the words to enter the computer．The computer looks for these words in this database and gives you a list of reference for your topic．A computer can take two or more ideas and produce references that combine those ideas．A computer search can also be more complete than a manual search．
College and university libraries are providing other technological services as well．Another change is the frequent use of microfilm．Librarians are able to collect more materials in one building by having newspapers, magazines, and other documents on microfilm．Students use microfilm readers in the library for these materials．
These innovations in libraries are helpful to library users, but they are also expensive．Many libraries are facing budget(预算)problems．There is more technology available(可得到的)today; as a result, libraries are paying higher costs for the equipment that makes researches easier．
(1)
Before a research begins, students may find out in the library ________．
[ ]
A．
if the computer looks through its database to choose their topic
B．
if the computer writes out a list of the words they entered
C．
if a computer search will be useful
D．
if librarians are helpful to them
(2)
When the computer's database includes the research topic ________．
[ ]
A．
computer searches are not helpful before the research project
B．
computer searches are useless for most kinds of research
C．
a computer search for materials is the best way to begin any type of research
D．
computer searches can save time
(3)
Libraries can keep larger amounts of materials by ________．
[ ]
A．
buying a lot of newspapers
B．
collecting more information on other university building
C．
using different indexes from other university libraries
D．
having microfilm copies of newspapers and other documents
(4)
What can be concluded from the last paragraph?
[ ]
A．
Libraries have budget problems because of the many library users
B．
Libraries have budget problems because it is easier to use newspapers．
C．
Technological innovations are helpful but expensive．
D．
Technological equipment makes research easier for the library users．