男性，6岁。走路跛行3个月，左下肢短，股四头肌萎缩，左髋关节屈_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题 B型题

男性，6岁。走路跛行3个月，左下肢短，股四头肌萎缩，左髋关节屈伸活动良好，但内外旋受限。诊断符合（）

A.发育性髋脱位

B.化脓性关节炎

C.髋臼发育不良

D.先天性髋内翻

E.股骨头缺血性坏死

答案

参考答案：E

补全对话，情景问答

从方框中选择适当的句子补全对话。其中有两项是多余的。

A.  I want to buy a hat for myself.
B.  How much is it?
C. What color do you want?
D. What about this one?
E. What size do you want?
F. OK. Here you are.
G.  It's beautiful, isn't it?

A: What can I do for you, Sir?
B: __1__
A: For yourself? These are all for young people.  __2__
B: I like the blue one.
A: __3__
B: Thank you. __4__
A: One hundred yuan.
B: Oh, it costs too much.
A: __5__ It is cheaper.  It is only fifty yuan.
B: OK.  I'll take it.  Thank you.

判断题

在液压系统中减小流速、缩短管长、减小弯管和截面突变管，有利于减少压力损失。