单项选择题
Conversation 1
A.To buy a sweater. B.To hold a birthday party. C.To exchange a sweater. D.To meet her boss.
A.Nine dollars. B.Five dollars. C.Four dollars and fifty cents. D.Two dollars.
A.今年产量五次增加,超过去年产量。 B.今年产量与去年产量相比,增加了5倍。 C.今年产量增加到去年产量的4倍。 D.今年产量为去年产量的5倍。