细胞中,每条染色体上的DNA分子数通常是( ) A.1个 B.2个 C.1对 D 发布时间:2017-04-12 22:40 │ 来源:www.tikuol.com 题型:选择题 问题: 细胞中,每条染色体上的DNA分子数通常是( )A.1个B.2个C.1对D.多个
题型:选择题 My grandfather wants around the world because he enjoys new places. [ ]A. travelling ; seeing B. to travel; to see C. to travel; seeing D. travelling;to see 查看答案