答:自行车的速度是汽车速度的40%.
“野火烧不尽,春风吹又生”,说明生物所具有的特征是( )
如图,在平面直角坐标系xOy中,点A(1,0),B(2,0),正六边形ABCDEF沿x轴正方向无滑动滚动,保持上述运动过程,经过(2014,3)的正六边形的顶点是( )
下面“以”字的用法,不相同的一项是( )
—What do you think of a house supplied by Lovell?
— you buy a home from Lovell,the company promises to buy it back at the same price after three years.