【名词&注释】
主支气管(main bronchus)、无所谓、一会儿(for a minute)
[单选题]关于右主支气管的描述，下列选项正确的是 （ ）
A. 细长
B. 粗短
C. 异物不易坠入
D. 右肺动脉在其后方
E. 其前方有下腔静脉
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举一反三：
[单选题]In the last paragraph，the author mainly intends to
A. list the necessary changes we ought to make
B. advise US to make any necessary changes
C. explain what changes can bring
D. explain the process of making changes
[单选题]The key word in Paragraph 4 is ______.
A. barriers
B. ignorance
C. disability
D. prejudice
[单选题]
A. I am awfully sorry,B． Not at all.
B. It's my pleasure.
C. No, of course not.
D. Coffee, please.
E. F. You don't look well.
F. G. But he panned to.
G. H. Take it easy.
H. 56. Tony: OK. Tom. Thank you very much for your invitation.
I. Tom:______.
[单选题]Waiter: Hello, sir. ?Customer: Could you give us a second, please?
A. Waiter: Sure.
B. Are you ready to order
C. How can I help you
D. Ready to take my order
E. Can I do you a favor
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