题目

Our village is making efforts to ________ its development pattern to promote green growth. A . squeeze B . compromise C . transform D . differentiate 答案：C袋中共有15个除了颜色外完全相同的球，其中有10个白球，5个红球．从袋中任取2个球，所取的2个球中恰有1个白球，1个红球的概率为（ ）A.B.C.D.1