题目

3．下列四个选项中没有采取植物组织培养技术的是 A．花药离体培养得到单倍体植株 B．秋水仙素处理幼苗获得多倍体植株 C．人工种子的培育 D．“番茄——马铃薯”杂种植株的培育过程 答案：B 17. Greatly moved by what he did , ____ .   A. tears came to my eyes         B. my heart was full of gratefulness   C. my eyes were filled with tears   D. I could hardly hold back my tears