选择正确的汉意并读一读。( ) 1. four ( ) 2. one ( ) 3 发布时间:2017-04-04 20:57 │ 来源:www.tikuol.com 题型:选择题 问题: 选择正确的汉意并读一读。( ) 1. four ( ) 2. one ( ) 3. nine ( ) 4. three ( ) 5. ten ( ) 6. eight a. 9 b. 3 c. 10d. 8 e. 4 f. 1
题型:选择题 —Have you made up your mind _____ the sick kids? —By singing songs. [ ]A. what to tellB. how to cheer up C. when to help D. where to look after 查看答案
题型:选择题 把100个观察单位先编号,然后每隔若干个单位抽取一个单位进行调查,例如以尾数为8的观察单位进行调查,这种抽样方法称为()A.单纯随机抽样B.机械抽样C.分层抽样D.整群抽样E.普查 查看答案