有两个光滑固定的斜面AB和BC,A和C两点在同一水平面上,斜面BC比斜面AB长(如图),一个滑块自A点以速度vA上滑,到达B点时速度减小为零,紧接着沿BC滑下,设滑块从A点到C点的总时间是tC,图中能正确表示滑块速度的大小v随时间t变化规律的是( )
I think Readers(《朗读者》)is educational TV program.( )
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Our science teacher said that light much faster than sound.( )
traveled
travels
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You should come by eleven o'clock you want good seats.( )
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Daming wants to be a policeman when he up.( )
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grows
My home town is famous for its beautiful mountains and clear water.( )
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