题目

如图为根尖结构示意图，在幼根生长过程中能够不断分裂增加细胞数量的区域是（） A . ① B . ② C . ③ D . ④ 答案：CAlthough difficult, she finished the job on time, so I think that she certainly deserved __________.A. being praised B. to be praisedC. to praise D. having praised