推动经济全球化的主要因素有()
A、科技的进步
B、跨国公司采取全球化战略
C、发展中国家经济的发展
D、一个国家努力发展自身的经济
E、发达国家经济的发展
参考答案:A, B
— I am terribly sorry, sir. I thought it was a parking place.
— ______. Here is your ticket. [ ]
A. It doesn't matter
B. You are right
C. I can't agree with you
D. Sorry, that's no excuse
已知关于x的方程x2-(m+1)x+m=0
(1)求证:不论m取何实数,方程都有实数根;
(2)为m选取一数,使方程有两个不相等的整数根,并求出这两个实数根.