沟通太平洋和大西洋,连接北美洲和南美洲的是( )
A:白令海峡
B:麦哲伦海峡
C:苏伊士运河
D:巴拿马运河
判断对错.
100以内的数中,同时能被3和5整除的最大的数是75.
Children to watch thrillers. They may have a bad influence on children.
—Yeah, she works hard and practices_________ it both in and out of class.
若(x+3)(x+n)=x2+mx﹣21,则m的值为( )