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【单选题】
假如厂商生产的产量从 1000 单位增加到 1001 单位,总成本从 2000 美元上升到 2020 美元,那么它的边际成本等于A.
10 美元
B.
20 美元
C.
2020 美元
D.
2 美元
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举一反三
【单选题】What does “She wisely refused to answer such a silly question” mean?
A.
She refused to answer such a silly question in a wise manner.
B.
It was wise of her to refuse to answer such a silly question.
C.
She refused, in a wise manner, to answer such a silly question.
D.
She was tired and didn’t want to answer anything.
【判断题】The Middle Age is a period in which classical, Hebrew and Gothic heritages merged.
A.
正确
B.
错误
【简答题】She was ______ (shame) of having asked such a silly question.
【单选题】What did the woman mean by saying 'How silly of me'?
A.
She meant it was silly of her not to attend the lecture.
B.
She meant it was silly of her to blame the students.
C.
She meant it was silly of her to mix up the dates of the lectures.
【单选题】Europeans did several Crusades in the Middle Age mainly for the______________ reason.
A.
political
B.
economic
C.
cultural
D.
religious
【单选题】______ was the last important poet in the Middle Age.
A.
Caedmon
B.
Cynewulf
C.
G. Chaucer
D.
W. Langland
【简答题】Fencing has a long (1) as a modern Olympic . It is one of the five (2) which have been featured in every one of the modern Olympic (3) . In the Middle Age, a boy took more than ten years (4) fenc...
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