【单选题】听力原文: Human population near the equator have evolved dark skin over many generations because of exposure to the fiercest rays of the sun. A similar phenomenon has also occurred in other parts of the a...
A.
The adaptations of the African grass mouse to its environment
B.
The sleeping habits of the African grass mouse
C.
The effect of intense sunlight on the diet of the African grass mouse
【单选题】听力原文: Human population near the equator have evolved dark skin over many generations because of exposure to the fiercest rays of the sun. A similar phenomenon has also occurred in other parts of the a...