The word “they” in paragraph 3 refers to
Đáp án A
(1) Protozoans are considered animals because, unlike pigmented plants to which some protozoans are otherwise almost identical, they (protozoans) do not live on simple organic compounds
Silent reading, especially in public places, flourished mainly because of ___.
Paragraph 4 of the passage serves mainly to do which of the following?
It can be inferred that the emergence of the mass media and specialised reading materials was an indication of ___.
Why did the author wait until the last line to reveal the identity of the man in the photograph?
According to the passage, many people’s understanding of desertification is incorrect because _____.
According to the passage, agriculture furthers desertification through which of the following activities
The word “degradation” in paragraph 4 is closet in meaning to _____.