下列有关动物生命活动调节的说法错误的是[ ]

A．单细胞动物、低等的多细胞动物和高等动物一样，都能进行体液调节和神经调节

B．神经调节和体液调节的机理不同

C．激素调节是体液调节的主要内容

D．神经调节和体液调节在作用途径、反应速度、作用范围和作用时间上都有所不同

—When did he start playing basketball ?

—He began to play ________, and became famous ________. [ ]

A. in the 1990s,  in his twenties

B. in 1990,  in his twenty

C. in 1990s,  in the twenties

D. in the 1990's,  in his twenty