已知x-y=4,xy=12,则x2+y2的值为( )A.28 B.40 C.2 发布时间:2017-05-16 04:07 │ 来源:www.tikuol.com 题型:选择题 问题: 已知x-y=4,xy=12,则x2+y2的值为( )A.28 B.40 C.26 D.25
题型:选择题 It was in the small house ___was built with stones by his father ___ he spent his childhood. A. which; that B, that ;where C, which; which D. that; which 查看答案