题目

水稻体细胞中有24条染色体，有丝分裂的前期和后期DNA分子数﹕染色体数分别是（ ） A．2﹕1和2﹕1                      B．1﹕2和1﹕2   C．2﹕1和1﹕1                      D．1﹕1和2﹕1 答案：C 解析: 略—Would you please give me a speech on Chinese traditional festivals tomorrow?—_________, but I'm going to Guangzhou for a meeting.A.It doesn't matter.B.Best wishes.C.Not at all.D.I wish I could.