题目内容 (请给出正确答案)
[单选题]

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

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更多“当效用达到极大值时,边际效用()。 A.达到最小 B.达到最…”相关的问题

第1题

—I heard you almost missed the train.—Yes. I got to the railway station with only five min

—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

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第2题

听力原文:M: The Beijing Railway Station, please. I want to catch the 10:30 train.W: We'll

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.

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第3题

He ran to the railway station and _____the last train.A、catchB、catchesC、caughtD、catched

He ran to the railway station and _____the last train.

A、catch

B、catches

C、caught

D、catched

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第4题

A: I'm sorry we are late. We missed the train. B: ______. A: Well, I got the time wrong an
d when we arrived at the station, the train had just left.

A.It doesn't matter.

B.Don't be late next time.

C.What did you do?

D.How did that happen?

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第5题

What can we learn from the conversation?A.The man caught the train.B.The man missed the tr

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.

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第6题

(Let's hurry) up and try to (get to) the railway station (in time), (can we)?A.Let’s hurry

(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

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第7题

We missed our train. , we had to wait for another two hours()

A.For

B.However

C.Therefore

D.As

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第8题

When we arrived at the railway station, they were ___________ there.

A.yet

B.once

C.already

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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 g

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.

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第10题

We hurried to the station ______ find ourselves three hours earlier for the train.A.only t

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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