蛙的生殖方式为[ ] A.雌雄同体,互相交换精子 B.雌雄异体,雄性将精子送入雌 发布时间:2017-05-23 23:44 │ 来源:www.tikuol.com 题型:选择题 问题: 蛙的生殖方式为[ ]A.雌雄同体,互相交换精子 B.雌雄异体,雄性将精子送入雌性体内 C.雌雄异体,精子与卵细胞被排出体外,进行体外受精 D.雌雄异体,体外受精,成蛙照看、保护受精卵和蝌蚪
题型:选择题 Look at the trouble I am in! If only I ______ your advice.A.followedB.would followC.had followedD.should follow 查看答案
题型:选择题 Getting other people to do willingly what we want them to do is the true meaning of leadership. 查看答案