What is protoplasm? A class of protozoan The substance that forms the cell of

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. A class of protozoan

B. The substance that forms the cell of a protozoan

C. A primitive animal similar to a protozoan

D. An animal that developed from a protozoan

* Đáp án

B

* Hướng dẫn giải

Đáp án B

(1) The protozoans, minute, aquatic creatures each of which consists of a single cell of protoplasm

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