农田生态系统中,属于生产者的是( ) A.青蛙 B.昆虫 C.水稻 D.泥鳅 发布时间:2017-05-04 13:34 │ 来源:www.tikuol.com 题型:选择题 问题: 农田生态系统中,属于生产者的是( )A.青蛙B.昆虫C.水稻D.泥鳅
题型:选择题 —What are on show in the museum?—Some photos _____ by the children of Yushu, Qinghai. [ ]A. have been takenB. were takenC. are taken D. taken 查看答案