Listening Quiz: Đề Xuất Kỹ Thuật Cho Vải Hiệu Năng Cao – Easy Level

1. What is the conversation mainly about?
2. According to John, what helps the fabric keep cool in hot weather?
3. What does John say about cleaning the fabric?
4. What can be inferred about Anna’s reaction to the proposal?
5. What does Anna say about the fabric’s price?

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