查阅资料可知，米酒味道变酸是因为米酒中产生的醋酸杆菌使乙醇（C₂H₅OH）和氧气发生反应生成了醋酸（CH₃COOH）和另一种常见的液体。回答下列问题：

    There was a very rich man, but he didn't feel happy. So he asked a clever old man ____ he could be happy.

    "That's very easy." the old man said, "You just put ____ the shirt of a happy man and you will be happy."

The rich man thanked the old man and went to ____ for a happy man. He visited many countries and met many ____. But they all said they were not ____.

One day, he saw a poor farmer working on a ____. The man was ____. He looked very happy. The rich man went up to ____ and asked, "Are you happy?"

     "Yes, quite happy," answered the farmer.

     "Can you sell me your ____?" asked the rich man.

     "My shirt?" the farmer answered, " ____ I haven't got a shirt."

八年级(2)班要召开关于“维护新疆、爱我中国”的主题班会，可是在下列重大事件上遇到了时间顺序的问题，请你把顺序排列起来(    )

①阿古柏侵入新疆  ②沙俄占领伊犁  ③中俄签约，中国收回伊犁

④清政府在新疆设行省