阿摩線上測驗
9. More than 4 billion __ were traded in the stock market today.
(A) shares
(B) currency
(C) coins
(D) money
答案：登入後查看
統計： A(0), B(2), C(0), D(0), E(0) #3351910
統計： A(0), B(2), C(0), D(0), E(0) #3351910
