哪项属于资产管理比率？（） A.总资产周转率 B.资产负债率 C.资产收益率 D.投

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A political scientist from Indiana University whose work exploring how people come together to preserve their collective resources may provide important clues in the fight against climate change has become the first woman to win the Nobel prize for economics.

Elinor Ostrom, 76, shares 2009 Nobel prize with fellow American academic Oliver Williamson, 77. The Royal Swedish Academy of Sciences announced to the world the pair had been chosen to win the 40th prize in economic sciences.

For Ostrom, the award came, as a "big surprise". To rise to the peak of her area of learning has been a big journey, as she has had to struggle against her own weaknesses and the barriers of the system. At school in Los Angeles, she suffered from stuttering. She also faced the barriers common to most women of her generation entering the sciences --- she was discouraged from taking a PhD when she applied for graduate school.

Her field of study has been striking for how cross-disciplinary it is. Early on she gained a reputation for bringing economics, political science and sociology together.

What interests her is how common property can be managed successfully through groups in society. The findings of her research have been striking, as the Nobel committee pointed out, because they have challenged the traditional assumption that common property is poorly managed unless it is either controlled by government or privatized. She has shown how different individuals can band together and form collectives that protect the resource at hand.

“A lot of people are waiting for more international co-operation to solve global warming.” Ostrom said , “It is important that there is international agreement, but we can be taking steps at family level, community level, civic and national level … There are many steps that can be taken. That will not solve it on their own but continuously will make a big difference.”

（1）How did Ostrom feel when she got the prize?  (not more than 3 words)

（2）What does “cross-disciplinary” mean according to the passage?  (not more than 9 words)

（3）Why was Ostrom advised not to take a PhD when she applied for graduate school?  (not more than 9 words)

（4） Why was Ostrom awarded the Nobel prize for economics?  (not more than 16 words)

实行教师聘任制，学校与教师之间的法律关系主要表现为以平等、自愿为基础的　法律关系。

风机启动前，必须关闭（）。

ACEI宜用于（）

A.高血压合并高钾血症

B.高血压并发感染性休克

C.高血压合并糖尿病肾病

D.高血压合并妊娠

E.高血压合并双侧肾动脉狭窄

中耳最常见的上皮性肿瘤是哪一个肿瘤？