生长素/细胞分裂素的比率平衡时有利于愈伤组织增殖。 发布时间:2019-10-26 17:54 │ 来源:www.tikuol.com 题型:判断题 问题: 生长素/细胞分裂素的比率平衡时有利于愈伤组织增殖。
题型:判断题 The accident _____ on the morning of last Monday. [ ]A. was happened B. was taken place C. took place D. happening 查看答案