A:
B:
C:
D:
Give her a ______. She is doing her homework.
口袋里有相同的2个红球、4个白球和6个黑球,从口袋里摸出2个球,若两个都是红色,则甲胜;若两个都是黑球,则乙胜.谁获胜的概率大( )
第三枝铅笔最长.