题目

Boys and girls, I have got ________ to tell you. Please listen to me carefully.    A. important something            B. anything important    C. nothing important             D. something important 答案：D在不透明的袋子中装有4个红球和7个黄球，每个球除颜色外都相同，（1）从中任意摸出一个球，摸到 球的可能性大．（2）如果另外拿5个球放入袋中，你认为怎样放才能让摸到红球和黄球的可能性相同？