Which of the following is best supported by the passage?

Câu hỏi :

Which of the following is best supported by the passage?

A To effectively control pollution, local government should regularly review their air pollution laws.

B Scientists should be consulted in order to establish uniform limits for all air pollutants.

C One of the most important steps in preserving natural lands is to better enforce air pollution laws.

D Human activities have been effective in reducing air pollution.

* Đáp án

A

* Hướng dẫn giải

Phương pháp giải:

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