Eyespots, the most rudimentary eyes, are found in protozoan flagellates, flatworms, and segmented worms.

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问题 Eyespots, the most rudimentary eyes, are found in protozoan flagellates, flatworms, and segmented worms.

选项 A、hostile-looking
B、perceptive
C、primitive
D、strangely formed

答案C

解析

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职称英语综合类基础

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