--- No, she went to the party.
A:goes
B:go
C:went
D:going
At that time, we ____ ____ ____ ____ the winter holiday.
如图所示,在倾角为37°的固定斜面上,放置一个质量为5kg的物体,物体与斜面间的动摩擦因数为0.8.已知sin37°=0.6,cos37°=0.8,g=10m/s2.