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
