Their clothes were ______ colorful ________ I could not stop taking photos.
A:too…to…
B:so…that…
C:although…but…
D:because…so…
0.81的平方根是( )
—Excuse me, Mum. When can we have dinner?—Not until it in half an hour.
下列说法中错误的是( )
甲、乙两个物体沿同一直线向同一方向运动时,取物体的初速度方向为正方向,甲的加速度恒为2m/s2,乙的加速度恒为﹣3m/s2,则下列说法中正确的是( )