Official 21 Lec 3
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Question 5 of 6
Why does the professor mention the brown tree snake?

A.

To support a hypothesis about the evolution of constrictor snakes

B.

To support a hypothesis that venomous snakes evolved from constrictor snakes

C.

To give an example of a snake species that was never venomous

D.

To give an example of a type of snake that can change its color

我的答案:

正确答案:A

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