1.How long have Barbie dolls been into existence（存在）?
A.40years. B. 50years. C. 60years.
2.How many Barbie dolls are sold per minute according to the woman?
A.80. B.180. C.1800.
听下面一段对话，回答第3-4题。
3.Which marathon will the woman run?
A.The full marathon.
B.The two thirds of the full marathon.
C.Half the full marathon.
