（12分）798艺术区是位于北京市朝阳区大山子地区的一个艺术园区，日渐成为北京的

发布时间：2017-07-28 20:30 │ 来源：www.tikuol.com

题型：综合题

问题：

（12分）798艺术区是位于北京市朝阳区大山子地区的一个艺术园区，日渐成为北京的文化地标之一， 798能变成今天这样的面貌，是一个命运的偶然，更是一个历史的必然。

阅读下表，结合所学，划分大山子地区经济发展的历史阶段。（6分）分析798艺术区形成的原因（6分）（要求：材料运用充分，言之成理，符合企业自身发展规律。）

798艺术区发展沿革

时段	大事记
1951年	中央提出在北京大山子地区建设工厂，生产无线电电子元件，周恩来批示与东德协商援建。
1954年	东德援建专家与苏联专家抵达北京。
1957年	建成投产，时任国务院副 * * 的薄一波亲自为工厂开工典礼剪彩。
1958年	党的八大二次会议通过社会主义建设总路线，掀起“大跃进”高潮，工厂响应号召举行游行和誓师大会。
1964年	根据第四机械工业部有关文件，原厂定名为798厂，形成上万个品种的电子元器件产品体系。
20世纪90年代	798厂由以生产为中心的车间到分厂制承包经营，再到股份制改造。
2000年	798等单位整合重组为北京七星华电科技集团有限责任公司。部分房产被闲置了下来。为了使这部分房产得到充分地利用，七星集团将这些厂房陆续进行了出租。
2002年	隋建国、刘索拉、于凡等艺术家开始进驻798，建立工作室。
2003年	美国人罗伯特在798开设八艺时区书店。
2005年	798成为北京政府首批授牌的文化创意产业集聚区之一，到该年，共有一百多位艺术家和三百多家私营艺术机构进驻798艺术区。

考点：东盟的成立和发展

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骨盆骨折合并腹膜后出血休克，经积极抢救未见好转时，可采取（）。

A.DSA栓塞髂外动脉

B.DSA栓塞髂内动脉

C.DSA栓塞髂总动脉

D.髂内DSA栓塞髂外动脉

E.DSA栓塞髂内髂外动脉与静脉

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题型：综合题

材料的布氏硬度（HB）值较大表示材料硬度（）。

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The idea of test-tube babies may make you either delighted at the wonders of modem medicine or irritated while considering the moral, or legal, or technological implications-of starting life in a laboratory. But if you’ve ever been pregnant yourself, one thing is certain: You wonder what it’s like to carry a test-tube baby. Are these pregnancies normal Are the babies normal
The earliest answers come from Australia, where a group of medical experts at the Queen Victoria Medical Center in Melbourne have taken a look at the continent’s first nine successful invitro pregnancies. The Australians report that the pregnancies themselves seemed to have proceeded according to plan, but at birth some unusual trends did show up. Seven of the nine babies turned out to be girls. Six of the nine were delivered by Caesarean section. And one baby, a twin, was born with a serious heart defect and a few days later developed life-threatening problems.
What does it all mean Even the doctors don’t know for sure, because the numbers are so small. The proportion of girls to boys is high, but until there are many more test-tube babies no one will know whether that’s something that just happened to be like that or something special that happens when egg meets sperm in a test tube instead of a fallopian tube. The same thing is true of the single heart defect. It usually shows up in only 15 out of 60,000 births in that part of Australia, but the fact that it occurred in one out of nine test-tube babies does not necessarily mean that they are at special risk. One thing the doctors can explain is the high number of Caesareans. Most of the mothers were older, had long histories of fertility problems and in some cases had had surgery on the fallopian tubes, all of which made them likely candidates for Caesareans anyway.
The Australian researchers report that they are quite encouraged. All the babies are now making normal progress, even the twin with the birth defects.

What does the word "invitro" underlined in Paragraph 2 most probably mean

A．Normal.

B．Test-tube.

C．Built-in.

D．Formal.

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超前导管及锁脚锚杆打设角度有什么要求？

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风机属于背负式机动喷雾喷粉机的（）部分。

A、喷洒

B、气流

C、药剂分散

D、动力

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