中国有句古语“尧为匹夫，不能治三人；纣为帝王，足以乱天下。”意思是说，即使像尧这样贤明的人，假如他是个普通老百姓，手里没有权力，也管不了几个人，干不了什么太大的好事，但是像商纣王这样品行不端的人，一旦当了帝王，手中有了无限的权力，就可以把天下搞得大乱。这主要说明（  ）

某单位有15名成员，其中男性10人，女性5人，现需要从中选出6名成员组成考察团外出参观学习，如果按性别分层，并在各层按比例随机抽样，则此考察团的组成方法种数是（　　）

CCTV《公司的力量》解说词叙述：洛克菲勒的美孚石油公司在掌握石油行业的10年中，日常用油的价格降低了80%。而（诺贝尔经济学奖得主）迈克尔·斯宾塞却说：“从某些方面看，人们争议的不是垄断本身，问题是他们过度阻碍了新的竞争者进入。”可见垄断组织的出现

﹣2的倒数是（　　）

阅读短文，用方框内所给单词的适当形式填空，使短文意思通顺、完整。（注意：①每个单词只能用一次。②其中有两个多余选项。）

    I went to the doctor's yesterday ____ I had a bad cold. I have ____ for three days, so I had a sore throat. When I got there,m there were many people ____  inline. I had to join the line at the end. But the man who was in front of me was____  there. The smoke made me sick. I wanted to stop him but I was afraid he would get____ . But I really couldn't stand it. So I told him ____ , “Would you mind smoking outside?” After hearing what I said, the man threw the____  on the ground and said to me, “Sorry.”I thought it was bad to do so, but I said ____ and picked up the cigarette. Seeing what I was doing, the ____  face turned red and felt very sorry about ____ he did. He turned to me and said, “You are a good girl. I won't do that again.”