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What did Crosby say about people in the 1960s?
What did Crosby say about people in the 1960s?A．They were unsure of raise more c
Whichtendedtobethemost e-mailed accordingtoDr.Berger’s resea
Whichtendedtobethemost e-mailed accordingtoDr.Berger’s research?A．Sports new． B．
Whatdoesthe underlined phrase““a pipe dream””in Paragraph 3m
Whatdoesthe underlined phrase““a pipe dream””in Paragraph 3mean?A．Apracticalidea
如如，一固定容器的内壁是半径为R的半球面；在半球面水平直径的一端有一质量为m的质点P。它在容器内壁由静止下滑到最低点的过
如如，一固定容器的内壁是半径为R的半球面；在半球面水平直径的一端有一质量为m的质点P。它在容器内壁由静止下滑到最低点的过程中，克服摩擦力做的功为W。重力加速度大