敲击鼓面，在听到鼓声时，还可看见鼓面上小纸团在跳动，说明鼓声是由于鼓面的____ 产生的；鼓面的____ 越大，鼓声的响度越大．

2016年11月，杨女生在某保健品店高价购买销售人员虚假销售的某品牌保健食品，服用半个月后身体不适，当地市场监管局执法人员帮助其维权并根据《消费者权益保护法》的规定，责令商家停业整顿，罚款10000元。这一案例告诉我们（    ）

①市场经济是法制经济                         ②消费者应树立消费者权益意识

③杨女士的自主选择权受到侵犯         ④消费者只享受权利不需履行义务

阅读下列材料： 时帝国地跨欧亚非三洲。境内农业、手工业和商业发展起来，海路畅通无阻，陆路纵横交错，四通八达，促进了贸易发展，也有利于信息传递和军队调动。帝国同北欧、印度、中国都有贸易往来，中国的丝绸也传入帝国。”

请回答：

You must make him ____ (stop) that noise.

    A man worked in a post office. His job was to handle(处理) all 1 that had unclear addresses. One day he came across a letter which was 2to God. He opened it and it 3，“Dear God，I am an 83­year­old woman and I live on a very small pension(养老金).Yesterday someone stole my 4.There was a hundred dollars in it，which was all the money I had 5 until my next pension comes. Next Thursday is Thanksgiving Day，and I have invited my last two friends for 6.Without that money，I have 7 to buy food with. I have no family to 8，and you are my only 9.Can you please help me？” The man was 10，and went around showing the letter to all the other workers. Each of them 11 their wallets and donated a few dollars. By the time he 12 his showing，he had collected 96 dollars. 13then he sent it to the old woman. Thanksgiving Day came and went. The workers 14forgot about it. Then one day，there came another letter from the old lady to God.All the 15gathered around when the letter was16.It read，“Dear God，how can I ever thank you enough for what you did for me？Because of your kindness，I was able to 17 a lovely dinner for my friends. We had a very 18 day，and I told my friends about your19 gift. Thank you very much！” Seeing this，all the workers felt 20 with the nice thing they had done. They looked into each other's eyes and smiled.