Official 9 Lec 3
Question 3 of 6
According to the professor, what feature of the sand dunes made the formation of the lakes possible?

A.

The degree of slope of the sides of the dunes

B.

The presence of clay and silt particles in the dunes

C.

The position of the dunes relative to the wind and rain

D.

The narrowness of the valleys between the dunes

正确答案:B

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