I came Monday. [ ]
A. from
B. on
C. to
答案：B
以下关于质点的说法正确的是（ ）
A．只有体积很小的物体才能被看成质点
B．只有质量很小的物体才能被看成质点
C．花样滑冰比赛中的运动员可以被看成质点
D．研究在平直公路上行驶的汽车的速度时，可将汽车看成质点
— The little boat is ______ safe . Don't you think so, Mike ?
— No worries! I've on this boat dozens of times.[ ]
A. something but
B. nothing but
C. anything but
D. everything but
