A．Cooler weather.B．Raining.C．Warm and sunny.D．Stormy.……

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.

填空题This passage gives an introduction of ______.

单项选择题A．$ 5B．$ 15C．$ 30D．$ 250

单项选择题A．To warn of dangers.B．To explain traffic regulations.C．To wake up drivers who are falling asleep.D．To give directions.

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

填空题extremely

填空题The icebergs are rarely seen because ______.

单项选择题A．An English reporter.B．An American reporter.C．An English scientist.D．An American scientist.

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