2.A　主旨大意题。文章首先介绍了何为中暑及中暑的危害,然后重点介绍了中暑后应该采取的急救措施。由第三段中的“Here are a few tips to help treat sunstroke.”和下文的小标题可知A项正确。

　　3.C　推理判断题。文章主要介绍了中暑后的一些急救措施,这些知识很可能出现在医学杂志上,应选C项。

　　B

　　In 2009,Dan Black was hit by a car in his hometown Wales,as he was biking to his job at a grocery store.The accident left him in a wheelchair.Once a promising guitarist,Dan,now 25,lives with his parents and requires around-the-clock care that costs nearly $300,000 a year.

　　After Dan’s paralysis(瘫痪),a friend of his started the Help Dan Black Fund to help afford his medical expenses.Dan learned about an experimental stem cell treatment in China that could completely restore his ability to walk and move.After four years,donations to the Help Dan Black Fund totaled nearly $30,000.

　　One day,in the summer of 2017,a news story caught the eye of Dan.The story featured a local five-year-old boy named Brecon who had a rare disease and had never walked without assistance.The boy’s family had created a website—the Vaughan website to collect the $100,000 needed for a treatment which could help Brecon walk.Only half the amount had been raised,said the report.

　　Learning that the boy needed money desperately for treatment and considering that his own dream of walking could be years away,Dan gave up all his $30,000 to Brecon.Dan’s generosity received a great deal of attention,and contributions started pouring in.The family soon achieved a lot more than their fund-raising goal.In October,Brecon and his family traveled to St.Louis for the treatment.

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