This passage gives an introduction of ______.

单项选择题A．Coorler weather.B．Raining.C．Warm and sunny.D．Stormy.

单项选择题A．A chemistry class.B．A biology class.C．A mathematics class.D．A physics class.

填空题business

单项选择题A．At a railway station.B．At a bus center.C．In the countryside.D．In a coastal town.

单项选择题A．Money.B．Ships and planes.C．Florida.D．Trains and cars.