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【简答题】
解释概念:“发愤著书”
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皮皮学刷刷变学霸
举一反三
【简答题】例2,已知集合A=(-∞,2),集合B=(-∞,4],求:A∪B,A∩B
【简答题】核酸的主要元素组成是 、 、 、 、 。
【单选题】The list of candidates for greatest men of the 20th century is as short as it is extraordinary. Franklin Roosevelt is the obvious American 【C1】______. He guided the United States safely through the ce...
A.
applicant
B.
candidate
C.
participant
D.
competitor
【单选题】According to the passage, which of the following can NOT describe the characteristic of the cheese?
A.
Cheese is one of the most general foods in the world.
B.
Cheese has hundreds of different shapes, sizes, flavors.
C.
Enjoyed, with butter, cheese is a delicious food.
D.
Cheese is a concentrated source of almost all the valuable nutrients.
【简答题】List and describe four determinants of productivity.
【简答题】核酸的主要元素组成
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