Who first gave baseball a standard set of rules'?
A.Abner Doubleday.
B.Alexander Cartwfight.
C.Albert Spalding.
D.Babe Ruth.

A.Abner
B.
B.Alexander
C.
C.Albert
D.
D.Babe

【参考答案】

B
解析：细节题型。见上题解释，正确选项为B。