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【单选题】
下列哪种呼吸通气效率最低A.
平静呼吸
B.
深而慢的呼吸
C.
浅而快的呼吸
D.
深而快的呼吸
E.
以上均不是
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反馈参考答案：
举一反三
【单选题】Had you come five minutes earlier, you () the train to Birmingham. But now you missed it.
A.
would catch
B.
would have caught
C.
could catch
D.
should catch
【单选题】Five minutes earlier, ______ we wouldn't have missed the last bus.
A.
or
B.
and
C.
but
D.
so
【单选题】Had I got there five minutes earlier, I could () her.
A.
meet
B.
meeting
C.
have met
D.
to meet
【单选题】Five minutes earlier, I the flight.
A.
have caught
B.
had caught
C.
could have caught
D.
were to catch
【简答题】If you ______ (arrive)five minutes earlier．you could have caught the bus．
相关题目：
【单选题】Had I got there five minutes earlier, I could () her.
A.
meet
B.
meeting
C.
have met
D.
to meet
参考解析：
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