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【单选题】
（）通常被称为邮递员线路问题。
A.
起讫点不同的单一问题
B.
起讫点重合的问题
C.
多起讫点问题
D.
带有限制条件的运输问题
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举一反三
【单选题】Subways are underground trains, which usually operate 24 hours a day. They are found in larger cities and usually run between the suburbs and the downtown area. Maps and schedules are available from t...
A.
within downtown areas
B.
away from city centers
C.
in or outside big modern cities
D.
between suburbs and city centers
【单选题】在本节中，你将听到15个对话，每段对话后有一个问题。请从A，B，C三个选项中选出答案，并标在试卷的相应位置。每段对话后有15秒钟的停顿，以便回答问题和阅读下一个问题。每段对话读两遍。 下面请听这些对话 What’s the matter with the man
A.
He got a high temperature.
B.
He got a bad headache.
C.
Both A and B．
相关题目：
【单选题】Subways are underground trains, which usually operate 24 hours a day. They are found in larger cities and usually run between the suburbs and the downtown area. Maps and schedules are available from t...
A.
within downtown areas
B.
away from city centers
C.
in or outside big modern cities
D.
between suburbs and city centers
【单选题】在本节中，你将听到15个对话，每段对话后有一个问题。请从A，B，C三个选项中选出答案，并标在试卷的相应位置。每段对话后有15秒钟的停顿，以便回答问题和阅读下一个问题。每段对话读两遍。 下面请听这些对话 What’s the matter with the man
A.
He got a high temperature.
B.
He got a bad headache.
C.
Both A and B．
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