设有如下关系表 则下列操作中，正确的是______。 A．T=R∩S B．T=R∪

当名义利率高于价格总水平上涨率时，或当名义利率不变，而价格总水平下降时，实际利率为（）。

A.相对数

B.零

C.负

D.正

The hole in the Earth's ozone layer (臭氧层) has until now protected Antarctica from the worst effects of global warming. But scientists have warned that as the hole closes up in the next few decades, temperatures on the continent could rise by around 3℃on average, with melting ice contributing to a global sea level increase of up to 1.4 metres.

In the past decades the western Antarctic has seen rapid ice loss as the world has warmed, but the other parts of the continent have, paradoxically, been cooling, resulting in a 10% increase in ice in the seas around the region. This is because the hole in the ozone layer has increased cold winds in Antarctica, making much of the continent surface colder than usual.

But now that the gasses that cause the ozone hole have been banned, scientists expect the hole to repair itself within the next 50 to 60 years. By then the cooling effect will have faded out and the Antarctic will face the full impact of global warming. This means an increase in average air temperatures of around 3℃ and a reduction in sea ice by around a third.

The biggest threat to the continent comes from warming seas. Robert Johnson, a scientist who monitors Antarctica ice sheets, said, "The ice sheets in Antarctica are hundreds of metres thick. But once warm ocean waters start flowing underneath, the ice will begin thinning and could break up very quickly. "Thinning ice sheets cause ice to break away from the continent and to melt even faster. Escaping ice from western Antarctica has already resulted in a 10% rise in global sea level in recent decades.

Johnson believes that international action to reduce global warming is required immediately or it may be too late. "Everything is connected - Antarctica may be a long way away but it is an important part of the Earth's system," said Johnson. "It contains 90% of the world's ice, 70% of the world's fresh water and that is enough, if it melts completely, to raise sea levels by 63 metres."

Even in a worse-case situation scientists don't expect the ice to entirely disappear, but predict that, because of the melting ice sheets, average sea level rise will be around 1.4 metres higher by the end of the century.

63. The underlined word "paradoxically" (in Paragraph 2) most probably means "__".

A. rapidly         B. approximately    C. contradictorily    D. apparently

64. What is the effect of the hole in the ozone layer on Antarctica?

A. It is causing the ice to melt faster.

B. It is making much of the continent colder.

C. It is making the effects of global warming in the region worse.

D. It is reducing the amount of water in Antarctica.

65. What do scientists think is the biggest danger facing Antarctica?

A. Rising sea levels.                  B. Warming sea water temperature.

C. Water pollution.                      D. Growing ice sheets.

66. Which of the following is true according to the passage?

A. Antarctica is currently experiencing the full effects of global warming.

B. The average temperature has increased by 3℃ in recent decades.

C. Antarctica contains most of the world's fresh water.

D. Ten percent of Antarctica's ice has already been lost.

男童，8岁，1年来尿频、尿痛和排尿困难，尿流突然中断，改变体位又能继续排尿，应首先考虑

A．膀胱炎

B． * * 炎

C．膀胱结石

D． * * 结石

E．泌尿系结核

在新的国际形势下，世界看待中国的目光正在发生着变化，人们开始更多地谈论“中国责任论”：一些发达国家要求中国承担更多国际责任，一些发展中国家也表示希望我国在国际上发挥更大的作用。对此，我们必须实事求是地界定我国的国际定位和角色，不做超出国情和力不能及的事，同时也不回避应尽的国际义务。理性务实扮演好中国的国际角色的主张，体现的哲学思维是（）

①要尊重实际，坚持主观与客观的具体的历史的统一

②要量力而行，注意把握分寸，坚持适度原则

③要审时度势，正确把握事物存在的利弊两重性

④实践决定认识，对中国国际地位的认识也是不断变化发展的

A.①②

B.③④

C.②③

D.①④

简述各种腺瘤癌变的几率和病理诊断。