【单选题】听力原文: The story of silk is a fascinating one. About 4,000 years ago the Chinese discovered the secret of the cocoon. No one knows exactly how or when this was made. One story says that a young princes...
【简答题】40 years ago the idea of disabled people doing sport was never heard of. But when the yearly s for the disabled were started at Stoke Mandeville, England in 1948 by Sir Ludwig Guttmann, the situat...