从6名女生、4名男生中,按性别采取分层抽样的方法抽取5名学生组成课外小组,则不同 发布时间:2017-05-14 16:10 │ 来源:www.tikuol.com 题型:选择题 问题: 从6名女生、4名男生中,按性别采取分层抽样的方法抽取5名学生组成课外小组,则不同的抽取方法种数为( )A.A36A24B.C26C34C.C36C24D.C510
题型:选择题 —The bell rang for a long time. Why not answer it?—I ______ taking a bath on the second floor. [ ]A. is B. was C. were D. are 查看答案
题型:选择题 You should be more careful, _______ you might meet with some accident.A.meanwhileB.otherwiseC.althoughD.however 查看答案