直接引起左心后负荷加重的瓣膜病变为()。 A.二尖瓣狭窄 B.主动脉瓣关闭不全 C.

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问题:

直接引起左心后负荷加重的瓣膜病变为()。

A.二尖瓣狭窄

B.主动脉瓣关闭不全

C.主动脉瓣狭窄

D.二尖瓣关闭不全

E.以上都不是

考点:北京住院医师医学影像Ⅰ阶段超声医学超声医学题库
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I lost my sight when I was four years old by falling off a box and landing on my head. Now I am thirty-two. I can vaguely(模糊地)  1  the brightness of sunshine and what color red is. It would be wonderful to see things again,  2  a disaster can do strange things to people. It happened to me the other day that I might not have come to love  3  as I do if I hadn’t been blind. I believe in life now. I am not sure that I would believe in it so  4 . I don’t mean that I would prefer to go without my eyes. I  5  mean that the loss of  6  made me enjoy more of  7  I have now.

Life asks us to keep making  8  to reality. If a person is able to get ready for anything changeable his world will  9  more meaningful. I became blind, but I was  10 . My parents and my teachers saw  11  in me-a potential(潜力) to live, you might call it-which I didn’t see, and they make me fight it out with blindness.

The hardest  12  I had to learn was to believe in myself. That was what I had to do at least. If I hadn’t been able to do that, I would become a chair rocker for the  13  of my life. When I say I believe in myself I am not talking about simply the kind of self-confidence that helps me down an unfamiliar staircase  14 . That is part of it. But I mean something bigger than that: A belief that I could deal with anything alone; that somewhere in the  15  there is a special place where I can make myself fit.

1. A. imagine       B. find             C. remember     D. guess

2. A. but           B. though               C. so           D. because

3. A. myself       B. life             C. eyes         D. blindness

4. A. that         B. therefore            C. happily      D. deeply

5. A. seldom        B. just             C. hardly           D. always

6. A. them      B. it                   C. blindness        D. light

7. A. that         B. what             C. which            D. where

8. A. moments      B. encouragements       C. improvements D. changes

9. A. become        B. change               C. look         D. end

10. A. brave        B. lucky                C. sad          D. wise

11. A. something    B. everything           C. nothing      D. anything

12. A. problem      B. experience           C. difficulty       D. lesson

13. A. rest     B. whole                C. need         D. last

14. A. lonely       B. alone                C. self         D. person

15. A. company  B. group                C. society  (社会)   D. family

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易安体

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Pioneer设备怎样连接?

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国际劳工组织认为,各国应根据具体的( )情况制定适合国情的重大危险源辨识标准。

A.国民经济

B.工业生产

C.劳动人员

D.国际关系

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马克思主义哲学的产生是哲学史上的伟大变革,主要表现在它在实践的基础上实现了()

①唯物主义和辩证法的统一

②世界观和方法论的统一

③唯物辩证的自然观和历史观的统一

④科学性与革命性的统一

A.①③④

B.①②④

C.①②③④

D.③④

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