Official 9 Lec 3
Question 2 of 6
What is the professor's opinion about the conclusions of the recent study of the limestone formations in the Empty Quarter?

A.

They have changed the way geologists study desert environments

B.

They contradict findings about similar desert lakes

C.

They explain the causes of monsoons in the desert

D.

They need to be confirmed by additional studies

正确答案:D

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