“深化改革”和“经济发展”成为2016年3月全国两会期间老百姓最关注的热词。下面说法正确的是 （    ）

①改革开放是我们的强国之路

②改革开放三十多年已使中国成为发达国家

③社会主义的根本任务是实现全体人民的共同富裕

④改革开放是我们的富民之路

    There are many people in the bus. Some have seats, but some have to stand. At a bus stop, a woman gets on the bus. An old man hears the door and tries to stand up. “Oh, no ，thank you", the woman forces（强迫）him back to the seat. "Please don't do that. I can stand." "But, madam. Let me…,”says the man. "I ask you to keep your seat." the woman says. She puts her hands on the old man's shoulder. But the man still tries to stand up, "Madam, will you please let me？”“Oh, no," says the woman, she again forces the man back. At last the old man shouts（大声喊），“I want to get off the bus!”

下列关于甲、乙两种物质溶解度曲线的说法中正确的是