-Let's play tennis.
-_______. I don't like it.
A:That sounds good
B:That sounds boring
C:That sounds interesting
D:That sounds relaxing
下列关于生物种群出生率和人口种群出生率的叙述,不正确的是( )
甲乙两物体通过的路程之比为4﹕3,速度之比为3﹕2,则它们行驶时间之比为( )
对下列事实的说明中,有错误的是( )