第29题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. They help people save time on housework. B. They go into the garbage heap. C. They are harmful to the environment. D. They make products more expensive. 参考答案:C 答案解析:[听力原文]
What is the problem with paper napkins and plastic food wrap