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【简答题】
边际效用递减规律
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】请你举例分析交通事故、交通拥堵等诸多交通问题是由于人、车、路以及交通环境之间的不协调所造成的。
【多选题】In construction area, one should wear ( ) while working.
A.
hard hat
B.
goggle
C.
work clothes
D.
safety shoe
【简答题】I used to live selfishly, I should admit. But one moment changed me. I was on my lunch break and had 41 the office to get something to eat . On the way, I 42 a busker ( 街头艺人)，with a hat in front of hi...
【单选题】Doctor: Don't worry, It is nothing serious. Take the medicine three times a day, one pill each time. Patient: Sorry. Do you mean three pill a time? Doctor: No. You should take one pill each time, thre...
A.
Take three pills each time.
B.
Take three pills a day.
C.
Take pill once a day.
D.
Take pills.
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