A:measured,i
B:measured,to
C:measured,for
D:measured,at
我国法律禁止近亲结婚的理由是( )
— You won the first prize in the Physics competition.— _________. I made several terrible mistakes.
一质点的运动方程为s=t2+10(位移单位:米,时间单位:秒),则该质点在t=3秒的瞬时速度为____