—______,Lily?
—The fish doesn't smell fresh,does it?
A:What does the fish look like
B:What's the matter
C:What do you like to eat
D:Do you like to eat fish
在地面上以初速度3v0竖直上抛一物体A后,又以初速度v0在同一地点竖直上抛另一物体B,若要使两物在空中相遇,则抛出两物的时间间隔t必须满足的取值范围为( )(不计空气阻力)
等比数列{an}的前n项和为Sn,若a3=6,S3=∫034xdx,则公比q的值为( )