属于正常2个月小儿动作行为发育的是() A.会抬头 B.会抬胸 C.会翻身 D.会坐 发布时间:2017-05-25 06:08 │ 来源:www.tikuol.com 题型:单项选择题 问题: 属于正常2个月小儿动作行为发育的是()A.会抬头B.会抬胸C.会翻身D.会坐E.会爬
题型:单项选择题 Jane _____ these families of chimps for many years and helped people understand how much they behave like humans.A.had studiedB.studied C.studiesD.has studied 查看答案