The old man didn't marry his young daughter _________ the rich man.
A:with
B:to
C:in
D:about
____ with the size of the whole earth, the highest mountain doesn't see m high at all.
课文《小摄影师》内容填空
高尔基____站起来,小男孩已经提着____跑出去了。高尔基走到窗户,____喊道:“孩子,____!我给你____,我这儿有____。”从高尔基的动作和他说的话中,可以体会到____。
如图所示,一带电荷量为+q、质量为m的小物块处于一倾角为37°的光滑斜面上,当整个装置被置于一水平向右的匀强电场中,小物块恰好静止.重力加速度取g,sin37°=0.6,cos37°=0.8.求: