已知方程x2+5x+k=0的两根之差为3,则k为( ) A.-4 B.-1 C. 发布时间:2017-04-26 21:31 │ 来源:www.tikuol.com 题型:选择题 问题: 已知方程x2+5x+k=0的两根之差为3,则k为( )A.-4B.-1C.1D.4
题型:选择题 — Beg your pardon, but I didn't follow you.— Oh, I ______ myself. [ ]A. would talk to B. talked to C. had talked to D. was talking to 查看答案
题型:选择题 周恩来在一次国际会议上发表讲话说:“从解除殖民主义痛苦和灾难中找共同基础,我们就很容易互相了解和尊重、互相同情和支持,而不是互相疑虑和恐惧、互相排斥和对立。”据此判断此次会议是______。A.日内瓦会议B.万隆会议C.不结盟国家首脑会议D.第二十六届联合国大会 查看答案