题型:判断题 自然选择的选择者和结果分别是[ ]A.人类、满足人类的各种需要B.不同的自然环境条件、适应环境的不断变化C.不同的自然环境条件、适应人类的各种需要 D.树叶的多少、颈短短颈鹿的死亡和长颈长颈鹿的存活 查看答案
题型:判断题 Tom _____ the girl that he _____ four years ago. [ ]A. married; engaged B. was married to; was engagedC. has been married to; was engaged to D. married with; was engaged in 查看答案