在消化道内,吸收率较高的砷是()。 A.有机三价砷 B.有机五价砷 C.无机五价砷 发布时间:2017-08-26 23:33 │ 来源:www.tikuol.com 题型:单项选择题 问题: 在消化道内,吸收率较高的砷是()。A.有机三价砷B.有机五价砷C.无机五价砷D.无机三价砷E.零价砷
题型:单项选择题 He said that not until the wheat died from the lack of water_____ how serious the drought was.A.did the villagers realizeB.the villagers realizedC.the villagers did realizeD.realized the villagers 查看答案