【单选题】听力原文: It seems like almost everyone buys or sells goods at yard sales in the United States. People place used personal or household goods for sale outside their homes (30) . The LT. S. one Twenty-Seve...
A.
They are places for people to exchange their goods.
B.
They are places for residents to heap the useless things.
C.
They are sales set for residents to sell and buy used things.
D.
They are sales set by stores to put their goods on sale.