According to the passage, coins once had real value as currency because they ______。
A.represented a great improvement over barter B.permitted easy transportation of wealth C.were made of precious metals D.could become collector's items正确答案C
According to the passage, coins once had real value as currency because they ______。
A.represented a great improvement over barter B.permitted easy transportation of wealth C.were made of precious metals D.could become collector's items正确答案C
