慢性阻塞性肺气肿的发病与下列哪几个因素有关？（） A.最常见的_爱下问搜题

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问题多项选择题

慢性阻塞性肺气肿的发病与下列哪几个因素有关？（）

A.最常见的原因是慢支

B.吸烟是主要的致病因素

C.反复感染

D.肺气肿发生与人体α-抗胰蛋白酶增高有关

E.与大气污染和气候有关

答案

参考答案：A, B, C, E

完形填空

完型填空。
     Look here, please! Can you see the man in black?   _1__ is Mr. Lee, my English teacher. He teaches (教) us __2  _ five days a week. He is a very good teacher. __3  _ is he? He's forty-five. He is __4  _
American. He has a car (小汽车).   _5__ yellow. Tom and Tim are   _6__ sons.   _7__ are in No.1
Middle School (一中). They can   _8__ Chinese,   _9__ they can't speak it well. Today they  _10__ at
school, because it is Sunday.

( )1. A. He
( )2. A. classes
( )3. A. What
( )4. A. a
( )5. A. Its
( )6. A. my
( )7. A. He
( )8. A. speak
( )9. A. and
( )10. A. are

  B. She
  B. English
  B. How
  B. an
  B. It's
  B. her
  B. They
  B. say
  B. but
  B. aren't

C. This
C. Chinese
C. How old
C. the
C. they're
C. his
C. We
C. tell
C. or
C. don't

解答题

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