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以“自主游戏”为主题,通过中国知网检索2007-2017年的相关文献,写文献综述的前言部分。
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】In 1975, the most popular fast food with Australian agers was fish and chips, being eaten 100 times a year. This was 1. higher than Pizza and hamburgers, which were consumed approximately 5 times ...
【多选题】单根神经纤维动作电位幅度:
A.
不随刺激强度变化而改变
B.
不随细胞外 Na + 含量的变化而改变
C.
不随传导距离而改变
D.
不随细胞 内 外 K + 含量的变化而改变
E.
不随细胞内 Na + 含量的改变而改变
【简答题】Chinese people have a saying:"门当户对",which originally referred to a marriage between families of equal social rank. The saying gradually evolved to mean that two people should only marry if they share ...
【简答题】In the last few decades of the 18th century, however, the ____________ emphasis upon reason, intellect, wit and form was rebelled against or challenged by the ____________, and was, in due time, gradu...
【单选题】Another theory was that the Neanderthals had children with Homo sapiens, and gradually became part of their group. However, 1997 DNA analysis by geneticist Svante Paabo and his colleagues at the Unive...
A.
bulks
B.
proofs
C.
traces
D.
descendants
【简答题】The men and women of Anglo-Saxon England normally bore one name only. Distinguishing epithets were rarely added. These might be patronymic, descriptive or occupational. They were, however, hardly surn...
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