消石灰的分子式为()。A.CaCO3 B.CaO C.Ca(OH)2 D.SiO2 发布时间:2017-07-22 15:08 │ 来源:www.tikuol.com 题型:单项选择题 问题: 消石灰的分子式为()。A.CaCO3B.CaOC.Ca(OH)2D.SiO2
题型:单项选择题 My father is _______. And we just had a party for his _______ birthday last weekend.A.forty; fortiethB.forty; fortyC.fortieth; fortyD.fortieth; fortieth 查看答案