The rich material of Mark Twain’s boyhood experience（）became the endless resources for his fiction.
A.on the Rocky Mountain B.in the desert C.on the Atlantic D.on the Mississippi正确答案D
The rich material of Mark Twain’s boyhood experience（）became the endless resources for his fiction.
A.on the Rocky Mountain B.in the desert C.on the Atlantic D.on the Mississippi正确答案D
