题目

连词成句 （1） skirt this my is (.) （2） are socks these her (?) （3） is sweater how much this (?) （4） shorts are how much these (?) （5） ten they dollars are (.) 答案：This is my skirt. Are these her socks? How much is this sweater? How much are these shorts? They are ten dollars.下图中的甲、乙、丙表示动物细胞有丝分裂过程中的三个阶段，a是染色体数，b是染色单体数，c是DNA分子数，a、b、c的数量关系正确的是　(　　) A．甲、乙　　B．甲、丙　　C．乙、丙 　　D．甲、乙、丙