| Global climate change, often seen as a
process stretching over thousands of years, could in fact occur abruptly and
unexpectedly-quickly pushing up temperatures by as much as 18 degrees Fahrenheit
and wreaking havoc(大破坏，浩劫) on human society, scientists warned on
Wednesday. "Climate change is not always smooth. Sometimes it is abrupt," said Richard Alley, a climate expert at Pennsylvania State University and lead author of a new National Academy of Sciences report on the threat of rapid climatic shifts. "If you have a very large, abrupt change, a lot of people and a lot of ecosystems are going to notice," he said．"The bigger and faster it is, the harder it will be to deal with." The new National Academy of Sciences report, released this week, warns that gradual global warming coupled with other human impacts on the envir A. sudden world climate change B. gradual global warming C. long-term influence of climate shift D. political havoc on human society [填空题]The things that are taught in history classes often tell us how countries and people ______.
[填空题]Some people cannot learn in ordinary schools. Often some physical or{{U}} (36) {{/U}}handicap prevents a child from learning. In education today new methods are being used in special schools to help the handicapped learn.
{{U}} (37) {{/U}}the many interesting schools for handicapped persons, there is one which is being{{U}} (38) {{/U}}in the southern part of New Jersey, U. S. A. It is called the Bancroft Community. Here handicapped young{{U}} (39) {{/U}}will be trained to support themselves and to get along in the {{U}} (40) {{/U}}world.
The Bancroft Community is not{{U}} (41) {{/U}}by walls of any kind. Its director{{U}} (42) {{/U}}that it be open so that students may gradually develop{{U}} (43) {{/U}}relations with the rest of the world. Ban croft Community students{{U}} (44) {{/U}}Gradually, as they become able, they will buy their own furniture, paying for it out of their own earnings. They will pay rent and pay for their food, too.{{U}} (45) {{/U}}.
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