若a+b 发布时间:2017-04-21 22:32 │ 来源:www.tikuol.com 题型:选择题 问题: 若a+b<0,ab<0,则下列判断正确的是 [ ]A.a,b都是正数B.a,b都是负数 C.a,b异号且负数的绝对值大D.a,b异号且正数的绝对值大
题型:选择题 If you have some ____ in working out the problem, turn ____ your friends for help. [ ]A. difficulties; forB. difficulty; to C. troubles; to D. trouble; round 查看答案