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问题 单项选择题

患儿，8个月。以牛乳喂养为主，因面色萎黄，形体虚胖，表情呆滞，乏力懒动，头及手足颤动来诊。体检：肝肋下2.5cm。血：HGB80g/L，RBC2.5×1012/L，MCV90fl/dl。骨髓相以红系增生为主。其诊断是（）

A.营养性缺铁性贫血

B.营养性巨幼红细胞性贫血

C.再生障碍性贫血

D.脑发育不全

E.混合性贫血

答案

参考答案：B

解析：小儿以牛奶喂养为主，缺乏叶酸、维生素B，有贫血及神经系统症状，且红细胞体积大，故应诊断为营养性巨幼红细胞性贫血。

阅读理解
配对阅读: 左栏是对五个人的描述，右栏是七个节目介绍。请将这五个人与适合他们的节目配对。
小题1:Johnson is a movie fan. He loves to get the news about the latest movies. His favorite Australian actor is Nicole Kidman.
小题2:Kathy is a housewife who has three children. She loves cooking and wants to learn to cook different kinds of food for her family.
小题3:Jenny is a middle school student. In her spare time, she usually listens to rock music and watches TV. Her favorite TV shows are comedies but she can't stand documentaries at all.
小题4:Jimmy loves talk shows. He wants to be a reporter and work in a TV station in the future. So he would like to learn more about TV from the talk show.
小题5:Kim is 70 years old now. He moved to the UK in 1960.Today he is still missing the life in the UK in the 1960s and often mentions it.
A．Documentaries Show
There are documentaries about the UK in the 1860s with three episodes and each one lasts 55 minutes. After watching, you will know more about people at that time.
B．Rock
The daily 30­-minute comedy tells a story about a rock band called Boy Crazy. The band is trying to become famous in the world. Enjoy the funny comedy and the rock music as well.
C．Media Watch
Australia's learning talk show about TV, radio, newspaper and Internet. It focuses on those who make the news and deliver the world to our home, such as the reporters, editors and photographers.
D．The Changes of the UK
Share your stories about life in the UK from 1960.You can have your own photos or videos. They can be funny or sad, big events or the small things of everyday life.
E. Big Ideas
A talk show about everything that is the most interesting and challenging, and everywhere from cities to the countryside and from the south to the north across America.
F. At the Movies
It's a talk show about movies. It goes into the world of cinema every week and tells you what's new on the big screen. And it has interviews with the famous directors or actors.
G. Pan's Kitchen
It used to be called Master Chef, now it has a new name because of the lady who is called Pan Ling. She can cook Chinese food and western food.
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计算题

(10分)内壁光滑的导热气缸竖直浸放在盛有27℃温水的恒温水槽中，用不计质量的活塞封闭了压强为、体积为的理想气体。现在活塞上方缓缓倒上质量为的沙子，封闭气体的体积变为；然后将气缸移出水槽，经过缓慢降温，气体温度最终变为。已知活塞面积为，大气压强为，g取，求：

(i)气体体积V1．

(ii)气缸内气体的最终体积V2(结果保留两位有效数字)．
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