摘要：
Diseases can cause many problems. Alzheimer's disease makes people have problems with their thinking. Even easy tasks are hard to do.A German doctor discovered the disease in 1907. Back then, it was c... 阅读全文
posted @ 2012-07-24 22:50 GreenDAYS 阅读(111) 评论(0) 推荐(0)
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