1920年孙中山指出：“有人说推翻清室以后，民族主义可以不要了，这话实在错了，即如我们住的租界，外国就要用治外法权来压制中国人，这还是前清造成的恶果，现在清廷虽然不能压制我们，但各国还是压制的……所以我还是三民主义缺一不可的。”这番话表明（   ）

根据短文内容，从A、B、C、D 四个选项中选出一个最佳答案。(共10分，每小题1分)
　Mr. Green works in an office in Chicago1 Saturday, he went to the office to some work. When he got on the elevator, it stopped between the2 .Mr. Green could not get out of the elevator. He started to 3 , but no one 4 him. Then Mr. Green remembered that it was a holiday in America. No one was going to come to work 5 Tuesday.
　　There was 6 for him to do. He had to wait. With nothing to eat 7 drink, Mr. Green slept for most of the time. Early Tuesday morning, his 8 came to work and found the elevator was not working. When the elevator was 9 , Mr. Green came out. He was cold, weak cold, weak, and tired. He had been in the elevator for about sixty-four 10 ! Now Mr. Green says, “I will only use elevators if they have a telephone in them.”

2013年2月21日,沪深股市放量大跌,其中,上证综指全天下跌近3%,创近15个月来最大单日跌幅。有分析人士指出,美联储调整量化宽松政策、1月份大小非抛售激增、房产税试点范围扩大等利空消息,是当日股指大幅下跌的“导火索”。这表明（  ）

①股票投资收益来自于公司经营利润　②炒股的风险远远大于其获得的收益　③股票价格波动具有很大的不确定性　④股票价格受多种因素影响