If you don't study hard, you won't ______ other students. [ ]

A. come up with

B. catch up with

C. agree with

D. play with

下列关于种族的叙述正确的是[ ]

A．现代人类可以分为四个种族

B．四个种族从生物分类学上来说属于四个物种

C．各个种族在体质特征和基因组成上区别明显

D．种族和民族有着相同的含义