额外心音大多出现在A.S1之前、S2之后 B.S2之前、S1之后 C.S3之前、S2 发布时间:2017-06-21 10:54 │ 来源:www.tikuol.com 题型:单项选择题 问题: 额外心音大多出现在A.S1之前、S2之后B.S2之前、S1之后C.S3之前、S2之后D.S4之前、S3之后E.S1之前、S4之后
题型:单项选择题 —How many people will come to Beijing next year?—It’s hard to say. ___________ people, I think.A.Million ofB.Three millionsC.Three millions ofD.Millions of 查看答案