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问题 单项选择题

男性，23岁，在输血后出现咖啡色尿，尿常规蛋白++++，隐血++++，其发生蛋白尿的类型为（）

A.肾小球性蛋白尿

B.肾小管性蛋白尿

C.溢出性蛋白尿

D.分泌性蛋白尿

E.组织性蛋白尿

答案

参考答案：C

阅读理解
阅读匹配。 阅读第1-5段材料，根据每段内容从A 至E中选出恰当的标题。
1._______
     Song Zuying is the most famous soprano (女高音歌唱家) in China. In the eyes
of the Chinese people, Song Zuying is the star of oriental art (东方艺术). She was
born in a beautiful place-Guzhang County in West Hunan. In recent years, she has
been awarded many highest prizes in various music contests. She loves her
hometown and does a lot for the people there.
2._______
     Wen Jiabao is the premier ( * * ) of the world's most populous (人口众多的)
country. But, millions of people would rather call him "grandpa". Always in plain (朴
素的) jackets, he seems an ordinary old man with a kind smile. But in the face of
disasters he has the power to pull together the whole country.
3._______
     Ding Cong, a famous cartoonist (漫画家) in China, died on May 26,2009. He started to draw cartoons more than seventy years ago, but he always called himself Xiao Ding
of Little Ding. He seemed to have a lot to learn in this world. His cartoons are humorous(幽默的) and interesting and loved by the old and the young in China.
4._______
      An 18-meter high "Olympic torch (火炬)" made of more than 110, 000 pots of
flowers, the biggest "Olympic torch" in the world, is seen at the Liberation Park in
Wuhan, Hubei Province. The "Olympic torch" was exhibited at the opening ceremony
(开幕式) of the 2008 Wuhan Flower Expo (展览会) to express local people's best
wishes to this summer Olympic Games.
5._______
     Liu Qian is the only magician (魔术师) form Taiwan invited by Las Vegas and the
Hollywood Magic Castle for performance (表演). When Liu Qian was 7 years old, he
started to study magic. The first magic he performed was to put a coin into his mouth
and then take is out from his hindbrain (后脑). Now Liu's magic tricks have made the
old art popular again, and made him the hottest magician in China.
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问答题

假设利润为总收益减总成本后的差额，总收益为产量和产品价格的乘积，某产品总成本(单位：万元)的变化率即边际成本是产量(单位：万台)的函数C’＝4+Q/4，总收益的变化率也是产量的函数R’＝9-Q，试求：

产量由1万台增加到5万台时，总成本与总收入各增加多少？
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