水、无机盐、尿素的主要排泄途径是 [ ] A.肾脏 B.皮肤 C.肺 D.随粪便 发布时间:2017-07-25 11:44 │ 来源:www.tikuol.com 题型:选择题 问题: 水、无机盐、尿素的主要排泄途径是 [ ]A.肾脏 B.皮肤 C.肺 D.随粪便排出
题型:选择题 The A(H1N1) flu virus will infect a third of the world's Population ____ it continues to spread at this rate, some scientists warned. [ ]A. when B. if C. though D. as 查看答案