Official 24 Lec 4
Question 6 of 6
What is the professor's opinion about the theory that Venus' volcanoes are active?

A.

The theory has recently been proved by direct observation.

B.

At least two kinds of evidence support the theory.

C.

The data collected so far about the theory are contradictory.

D.

New findings have made the theory quite unlike.

正确答案:B

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