某患慢性咳嗽，咳脓痰，反复咯血10多年，胸透多次无异常。近两周_爱下问搜题

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问题单项选择题

某患慢性咳嗽，咳脓痰，反复咯血10多年，胸透多次无异常。近两周来高热，脓痰量增多，味臭，胸片右下肺大片致密阴影，中有空洞及液平，白细胞18×10 9/L，诊断是

A．右下肺炎球菌肺炎

B．金黄色葡萄球菌肺炎

C．支气管扩张，继发肺脓肿

D．阿米巴肺脓肿

E．肺结核继发肺脓肿

答案

参考答案：C

选择题

根据图片选择正确的句子。

( ) 1.	A. Whose backpack is this? It's hers. B. Whose book is this? It's mine.
( ) 2.	A. Tom goes home in the afternoon. B. Tom gets up at seven o'clock in the morning.
( ) 3.	A. Lily is taller than Mary. B. Mary is taller than Lily.
( ) 4.	A. What's your favorite game? Basketball. B. What's your favorite game? Football.
( ) 5.	A. They will go to the science museum next weekend. B. They will go to the concert next weekend.
( ) 6.	A. I think music is the most interesting. B. I think art is the most interesting.
( ) 7.	A. What will he do on vacation? He will go to Beijing. B. What will he do on vacation? He will visit his grandparents.
( ) 8.	A. He often plays table tennis. B. He often plays volleyball.
( ) 9.	A. Where are you from? I'm from America. B. Where are you from? I'm from England.
( ) 10.	A. When is Children's Day? It's June 1st. B. When is Children's Day? It's July lst.

解答题

，求代数式a²+3ab+b²的值．