It can be inferred from the first paragraph that _______.

Câu hỏi :

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions from 55 to 64.

A. water vapor is an air pollutant in localized areas

B. most air pollutants today can be seen or smelled

C. the definition of air pollution will continue to change 

D. a substance becomes an air pollutant only in cities 

* Đáp án

* Hướng dẫn giải

Đáp án : C

“Air pollution requires a very flexible definition that permits continuous change”: ô nhiễm không khí là một định nghĩa hết sức phức tạp cái mà luôn thay đổi liên tục => C

Copyright © 2021 HOCTAP247