—I told you it would broke easily it was the weakest.
A:where
B:because
C:that
D:in which
____是一种添加剂,食品中添加食用色素,可以改变食品的外观和口味。
从地面上方某点,将一小球以10m/s的初速度沿水平方向抛出,小球经过1s落地,不计空气阻力,取g=10m/s²。求小球的位移和落地速度。