【学术讲座】#20
Question 4 of 4
What does the speaker imply about wind turbine blades that are being developed?

A.

The noise they create can be harmful to whales.

B.

They can be easily installed on buildings.

C.

They can be efficiently constructed from renewable materials.

D.

They are very similar to some whales’ flippers in shape.

正确答案:D

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