第22题: [单项选择]Questions 19 to 22 are based on the conversation you have just heard. A. They are often handled improperly by readers. B. The paper is destroyed by chemicals. C. The ink used in printing damages the paper. D. The glue used in the binding loses its strength. 参考答案:B 答案解析:[听力原文] According to the man, why do modern books decay