当效用达到极大值时,边际效用( )。
A.达到最小
B.达到最大
C.为零
D.为正
第1题
—I heard you almost missed the train.
—Yes. I got to the railway station with only five minutes to___.
A.leave
B.make
C.catch
D.spare
第2题
听力原文:M: The Beijing Railway Station, please. I want to catch the 10:30 train.
W: We'll be all right if there are no hold-ups.
Where does this conversation take place?
A.In the Beijing Railway Station.
B.In the street.
C.In a taxi.
第3题
He ran to the railway station and _____the last train.
A、catch
B、catches
C、caught
D、catched
第4题
A.It doesn't matter.
B.Don't be late next time.
C.What did you do?
D.How did that happen?
第5题
What can we learn from the conversation?
A.The man caught the train.
B.The man missed the train.
C.The woman missed the train.
第6题
(Let's hurry) up and try to (get to) the railway station (in time), (can we)?
A.Let’s hurry
B.get to
C.in time
D.can we
第7题
A.For
B.However
C.Therefore
D.As
第8题
A.yet
B.once
C.already
第9题
听力原文:W: I'm afraid we are going to miss the 3 -o'clock train.
M: Don' t worry. We can get our tickets changed for this evening.
Q: What does the man suggest they should do?
(15)
A.Check the timetable.
B.Go to the railway station earlier.
C.Travel on a later train.
D.Cancel the trip earlier.
第10题
We hurried to the station ______ find ourselves three hours earlier for the train.
A.only to
B.in order to
C.so as to
D.such as to
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