下图反映的美国失业率达到最高峰的主要原因是(     )

多音字组词。

漂  piāo____    piào____

扎   zā ____      zhā____

风靡北美的科幻电影《超体》以其超凡的想象力和震撼的视听效果，让大脑潜能一时间成为无数科幻影迷热议的话题。影片讲述了主人公露西先是被犯罪集团在体内植入毒药，其后又遭不测导致烈性毒药意外泄漏，命悬一线之际，其大脑潜能被不断开发的故事。在这个过程中，随着大脑潜能被不断的开发，露西从一个胆小懦弱的普通女孩，变身成为无所不能的“女超人”。这部影片一定意义上表明（  ）

①意识是人脑的机能，人脑是意识的物质器官

②科幻影片的情节都是虚构的，没有任何现实依据

③人脑的潜能是无限的，只要努力开发就能突破人类生理极限

④人脑是意识的生理基础，在未来人脑潜能的开发具有一定的可能性

       The hottest topic in Yongjin Middle School，it's money. The school held an activity called “making money” last weekend．About 200 Junior1and Junior 2 students were divided into 30 teams．They went out to make money by selling things．
Some sold newspapers；some chose bottled water；some sold environmentally friendly shopping bags．
      Hu Qing's team decided to sell some useful books in Activity Center．They thought parents would like to buy the books for their children．But unfortunately，they met urban management officers．The officers asked them to leave．“Finally we had to give up.” said Hu．
       Wang Bing and her team sold ice cream in a square．They didn't meet any officers．But few people were interested in what they were selling．The team then put up a board saying “For Country Kids”．It worked．More people came to their stall（小摊）．A foreigner even gave them 100 yuan. Later that day they gave the money to the “Project Hope” office．
      Meng Zhaoxiang and his team were luckier．They sold all their cakes in four hours．They made 40 yuan．“It was not easy to make the money，” said Meng．“Some people just looked．Others just tasted but didn't buy．Now I know how hard it is for our parents to make the money we need to lead happy lives．”