如果17a是质数,那么a=( ) A.1 B.17 C.不一定 D.11 发布时间:2017-05-18 05:22 │ 来源:www.tikuol.com 题型:选择题 问题: 如果17a是质数,那么a=( )A.1B.17C.不一定D.11
题型:选择题 Sometimes ________ English is quite different from _______ English in many ways.[ ]A. speaking, writing B. spoken, writtenC. speaking, written D. spoken, writing 查看答案