Câu hỏi :

What is the main use of biogas?

A. It is used mainly for cooking and heating.

B. It is mainly used for lighting.

C. It is mainly used for operating.

D. It is mainly used for producing in factories.

* Đáp án

A

* Hướng dẫn giải

Dẫn chứng: The main use of biogas is for cooking and heating, but it can also provide energy for public transport.

Chọn đáp án A. It is used mainly for cooking and heating: Nó được sử dụng chủ yếu để nấu ăn và sưởi ấm.

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