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【多选题】
一个好的研究课题应具有的特点是:A.
问题必须有价值
B.
问题必须有科学的现实性
C.
问题必须具体明确
D.
问题要新颖，有独创性
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】Mrs. Smith looked puzzled about what her husband said just now.
A.
excited
B.
confused
C.
conquered
D.
consented
【简答题】电流对人体的伤害程度与通电时间的长短有何关系?
【简答题】For those who make journeys across the world ,the speed of travel today has turned the countries into a series of villages.Distances between them appear no greater to a modern traveler than those whic...
【单选题】England got its name 'Angle' land from ______.
A.
the Celts
B.
the Romans
C.
the Germanic conquerors
D.
the Danes
【单选题】The story you told me the other day has yet to be____.
A.
confused
B.
confirmed
C.
conquered
D.
conformed
【简答题】请各小组认真学习《成本项目实验指导书》,按照指导书的要求进行分工,并将分工情况汇报。
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