答案：C
The player is under good treatment and the________are that he will recover from his injury in time
for the next game.[ ]
A. opportunities
B. occasions
C. chances
D. conditions
生产哺乳动物克隆的方法主要有胚胎分割和( )移植两种。
A．组织 B．细胞核 C．细胞质 D．细胞
