下列关于苯二氮卓类镇静催眠药的叙述，哪项是错误的： A．可用于治疗焦虑症 B．可用于

诊断子宫性闭经的依据是

A．注射黄体酮有撤退性出血

B．注射黄体酮无撤退性出血

C．雌-孕激素无撤退性出血

D．雌-孕激素有撤退性出血

E．雌激素有撤退性出血

使急性闭塞的冠状动脉再通，心肌得到再灌注，缩小梗死面积的治疗措施为（）。

A.解除疼痛

B.消除心律失常

C.溶解血栓疗法

D.抗凝疗法

E.极化液疗法

In “Relax, We’ll Be Fine”, columnist David Brooks writes, “the fact is, despite all the problems, America’s future is extremly bright.”

Mr. Brooks acknowledges that “According to recent survey, 60 percent of Americans think the country is heading in the wrong direction. The same percentage believe that the U.S. is in long-term decline. The political system is not functional. A financial crisis looks unavoidable. There are plenty of reasons to be sad.”

But, he writes:

“Demographers(人口学家) predict that over the next 40 years, the U.S. population will increase by an additional 100 million people, to 400 million over all. The population will be determined, hardworking and relatively young. In 2050, only a quarter will be over 60, compared with 31 percent in China and 41 percent in Japan.”

As the rising generation leads an economic recovery, it will also participate in a communal

(of community) one. We are living in a global age of social entrepreneurship(创业精神).

In sum, the U.S. is on the edge of a demographic, economic and social recovery, built on its historic strengths. The U.S. has always been good at destructive change. And it’s always been good at decentralized community-building, too. Surely a country with this much going for it is not going to wait around passively and let a rotten political culture drag it down.

51．In his article Relax, We’ll Be Fine, David Brooks intends to____________.

A．encourage Americans to be optimistic about their future

B．give Americans courage to face their financial crisis

C．persuade Americans to live happily and generously

D．inspire Americans to lead an economic recovery

52．There are all the reasons for Americans to be unhappy except____________

A．the function-failed political system         B．the increasing population

C．the declining economy                   D．the wrong direction and financial crisis

53．Over the next 40 years, according to David Brooks, Americans will be____________

A．more optimistic and humorous            B．more pessimistic and stronger

C．more energetic and promising             D．more considerate and aggressive

54．In the author’s opinion, America____________.

A．has always benefited from wars            B．has done well by its political system

C．has contributed a lot to human progress     D．has contributed to world’s economy

55．We can learn from the passage that____________

A．American political system and culture are backward

B．Americans are not a nation to give in to difficulties

C．Americans are very destructive and aggressive

D．America has been in an economic and social recovery

下列关于汞的治疗原则叙述错误的是（）

A.患者应进行驱汞治疗

B.急性中毒应尽快服用鸡蛋清、牛奶等

C.误服者应马上洗胃

D.患者应脱离汞作业

E.急性中毒应立即肌内注射二巯基丙醇

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