当化疗无法杀死所有的癌细胞时，一些细胞会进入什么状态？（）
A.死亡
B.衰变
C.程序性生长停滞
D.活跃
参考答案：C
— By the way, Tom sends his best wishes to you.
— ________. [ ]
A. All right
B. It's great
C. Thank you
D. That's nice of him
营养繁殖树种中，幼树期较短的是（）
A.苹果、梨
B.葡萄、桃
C.板栗、柿
D.荔枝、龙眼
