What is paragraph 4 mainly about? A. The advantages of traditional paper over modern alternatives

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What is paragraph 4 mainly about?

The advantages of traditional paper over modern alternatives

A new method of recycling stone powder and plastic waste

The production and benefits of paper made from stone

The history of paper manufacturing around the world.

Giải thích

 Phương pháp giải: Ý chính đoạn văn.

 Giải chi tiết:

· Đoạn 4 (từ The substitution product... đến no residue...) mô tả quy trình trộn bột đá + nhựa, ép áp suất, không dùng nước/hóa chất tẩy trắng.

· C. The production and benefits of paper made from stone.

 Đáp án: C