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问题 单项选择题

从资本成本的计算与应用价值看，资本成本属于()。

A.实际成本

B.计划成本

C.沉没成本

D.机会成本

答案

参考答案：D

解析：资本成本是指投资资本的机会成本。这种成本不是实际支付的成本，而是一种失去的收益，是将资本用于项目投资所放弃的其他投资机会的收益，因此被称为机会成本。

单项选择题

It’s not easy to be an astronaut’s son. Everybody expects you to be special or perfect. I often wonder how my father ever had a son like me. I mean he’s so special and so good at everything he does. Even in middle school he was class president and captain of the football team.
Well, to be honest, I often dream about being some kind of hero or doing something special-like saving a child from a burning building or discovering a new star. I was daydreaming at school one morning when my teacher said there would be a Father’s Day writing competition for the whole school. "I hope we have a winner right here in my class. "
When I got home, I started to think about what to write. My father is an astronaut. No, I wouldn’t start like that. That was the way others saw him. How did I see my father Hmm.
I saw him sitting with me in the dark when I had a terrible dream. I remembered how he hugged me for hours when my dog Spotty was killed by a car. Yes, these were the things I was going to write. To me, he wasn’t just a world-famous astronaut. He was my dad.
My parents and I went to school Thursday night. There were so many people in the big hall! My dad looked at me, and I shrugged (耸肩).
The third prize was announced and it was not me. I was relieved (释然) and disappointed at the same time. The second prize was announced. It was me.
I went up to the stage and read what I had written, My Father’s Son. When I finished, the people stood up and cheered. I saw my father blowing his nose. Tears were running down my mother’s face. Dad cleared his throat and put his hand on my shoulder. "Son, this is the proudest moment of my life. "
It was the proudest moment of my life, too. Maybe I’ll never be a great hero or win a Nobel Prize, but it was enough just to be my father’s son.

In order to ______ the writer would like to save a child from a burning building.

A. become astronaut


B. become a great hero
C. be made school team captain

D. be made class president
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单项选择题 案例分析题

男，30岁，头昏，乏力2年，血压21.3/13.3kPa（160/100mmHg），血红蛋白80g/L，尿比重1.014，尿蛋白（++），颗粒管型0～2/HP，BUN16.4mmol/L（46mg/dl），血肌酐309.4μmol/L（3.5mg/dl），眼底视网膜动脉细窄迂曲。

可能性最大的诊断是（）

A.高血压病Ⅲ期

B.肾性高血压

C.慢性肾小球肾炎尿毒症晚期

D.慢性肾小球肾炎氮质血症期

E.慢性肾盂肾炎
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