单项选择题
Conversation 1
A.Electric motors. B.Machine tools. C.Mechanical arms. D.Earth moving machines.
A.They wrote to him. B.They visited him. C.They called him. D.They sent him a letter.
A.我们喜欢购买东西,只是为了满足家庭的需要。 B.我们想要撤销商品的订单,是因为家庭市场起了变化。 C.因为超市价格发生了变化,我们想要退货。 D.由于国内市场的变化,我们想取消该批货物的订单。