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Scientists and engineers have invented devices to remove ________ from industrial wastes. 

Scientists and engineers have invented devices to remove ________

Câu hỏi

Nhận biết

Scientists and engineers have invented devices to remove ________ from industrial wastes.

 


A.
pollutions 
B.
pollute  
C.
polluting
D.
pollutants
Đáp án đúng: D

Lời giải của Luyện Tập 365

Đáp án đúng là D: pollutant (= chất gây ô nhiễm) là danh từ đếm được (countable noun) nên có thể ở dạng số nhiều.

 

Scientists and engineers have invented devices to remove pollutants from industrial wastes. (Các nhà khoa học và kĩ sư đã phát minh ra những thiết bị tách chất gây ô nhiễm ra khỏi các chất thải công nghiệp.)

pollution (= sự ô nhiễm) là danh từ không đếm được (uncountable noun) nên không thể ở dạng số nhiều.

pullute là động từ

polluting là hiện tại phân từ.

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