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【简答题】
( )是大学生产生心理问题的外因
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皮皮学刷刷变学霸
举一反三
【简答题】用非比例符号表示的地物,需要准确表示地物的()。A. B.中心位臵 B. C.外部轮廓 C. D.数量
【单选题】According to the 4th paragraph, how long can one stay aboard?
A.
Not more than six weeks in a year.
B.
Three months every year.
C.
Not more than 90 days one time.
D.
Over six months totally in four years.
【多选题】Which of the following happened in the 20th century? (Choose more than one)
A.
Brexit.
B.
Scientific breakthroughs.
C.
Environmental awareness.
D.
Migration of people.
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