The air is naturally contaminated by foreign matter such as plant pollens and dust

Câu hỏi :

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

A. polluted

B. occupied

C. filled

D. concentrated

* Đáp án

A

* Hướng dẫn giải

Đáp án A

“contaminated” = “polluted”: bị ô nhiễm

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