The word “they” in paragraph 3 refers to protozoans microscopes investigations colonies

Câu hỏi :

Read the following passage on transport, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 1 to 7.

A. protozoans

B. microscopes

C. investigations

D. colonies

* Đáp án

A

* Hướng dẫn giải

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

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