某市高校一幢教师公寓，总建筑面积20000m2，为8层现浇框架剪力墙结构，基础是钢筋

当加在某导体两端的电压为12V时，测得通过它的电流为1A，则该导体的电阻为______Ω；若加在该导体两端的电压减为6V，则该导体的电阻为______Ω；当电路断开时，导体中的电流为______A，导体的电阻为______Ω．

作用于泡膜细胞，使之合成性激素（）

A.雌激素

B.孕激素

C.糖皮质激素

D.LH

E.FSH

下列经颅多普勒(TCD)的描述中，哪项是错误的

A.不能定量反映脑血流量

B.可反映局部血流分布变化

C.可反映某一动脉供应区脑灌注变化

D.正确定出Vmean(平均流速)自动调节的上下限

E.可反映出脑血流的CO2反应性

如果印刷组的成员由F、H、L和M组成，而且装订组的成员由G、H和J组成，那么 K可以替换两组的哪一个成员而不违反任何给出的条件( )

A．F

B．G

C．H

D．L

Photos that you might have found down the back of your sofa are now big business!

In 2005, the American artist Richard Prince’s photograph of a photograph, entitled (Cowboy), was sold for $ 1, 248, 000.

Prince is certainly not the only contemporary artist to have worked with so-called “found photographs”—a loose term given to everything from discarded(丢弃的) prints discovered in a junk shop to old advertisements or amateur photographs from a stranger’s family album. The German artist Joachim Schmid, who believes “basically everything is worth looking at”, has gathered discarded photographs, postcards and newspaper images since 1982. In his on-going project, Archiv, he groups photographs of family life according to themes: people with dogs; teams; new cars; dinner with the family; and so on.

Like Schmid, the editors of several self-published art magazines also champion (捍卫) found photographs. One of them, called simply Found, was born one snowy night in Chicago, when Davy Rothbard returned to his car to find under his wiper(雨刷) an angry note intended for someone else: “Why’s your car HERE at HER place?” The note became the starting point for Rothbard’s addictive publication, which features found photographs sent in by readers, such as a poster discovered in your drawer.

The whole found-photograph phenomenon has raised some questions. Perhaps one of the most difficult is: can these images really be considered as art? And if so, whose art? Yet found photographs produced by artists, such as Richard Prince, may raise endless possibilities. What was the cowboy in Prince’s Untitled doing? Was he riding his horse hurriedly to meet someone? Or how did Prince create this photograph? It’s anyone’s guess. In addition, as we imagine the back-story to the people in the found photographs artists, like Schmid, have collated (整理), we also turn toward our own photographic albums. Why is memory so important to us? Why do we all seek to freeze in time the faces of our children, our parents, our lovers, and ourselves? Will they mean anything to anyone after we’ve gone?

In the absence of established facts, the vast collections of found photographs give our minds an opportunity to wander freely. That, above all, is why they are so fascinating.

小题1:The first paragraph of the passage is used to _________.

A．remind readers of found photographs

B．advise reader to start a new kind of business

C．ask readers to find photographs behind sofa

D．show readers the value of found photographs小题2:The underlined word “them” in Para 4 refers to __________.

A．the readers

B．the editors

C．the found photographs

D．the self-published magazines小题3:By asking a series of questions in Para 5, the author mainly intends to indicate that ________.

A．memory of the past is very important to people

B．found photographs allow people to think freely

C．the back-story of found photographs is puzzling

D．the real value of found photographs is questionable小题4:The author’s attitude towards found photographs can be described as _________.

A．critical

B．doubtful

C．optimistic

D．satisfied