题目内容:
In America, how many Valentine cards will be bought in a year()
A.Less than 900 million cards.
B.More than 900 million cards.
C.More than 600 million cards.
D.Not mentioned.
参考答案:
In America, how many Valentine cards will be bought in a year()
A.Less than 900 million cards.
B.More than 900 million cards.
C.More than 600 million cards.
D.Not mentioned.