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作图：根据光的反射定律，完成光路图或根据入射光和反射光的位置，确定反射面的位置．
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皮皮学刷刷变学霸
举一反三
【单选题】Wendy___________ the book for over two weeks. She has to ___________ it to the library. A.has borrowed, give B. borrowed, take C. has kept, return D. kept, return
A.
has borrowed, give
B.
borrowed, take
C.
has kept, return
D.
kept, return
【单选题】Television ______.
A.
has distorted the propose of slogans
B.
has kept consistent the nature of human interaction
C.
has made political images personal and shorter
D.
utilizes slogans well
【单选题】She _______ this book for nearly three weeks.
A.
has borrowed
B.
has lent
C.
has bought
D.
has kept
【单选题】The story book _________ for two weeks .
A.
has been borrowed
B.
has borrowed
C.
has been kept
D.
has kept
【简答题】对幼儿来说,进餐、盥洗、喝水、如厕、午睡等都是重要的学习活动,都属于幼儿园的课程内容,这体现了幼儿园课程( )A. 生活化 B.游戏化 C.启蒙性 D.科学性
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