A．they should avoid speed-related hazards B．they are driving in the wrong lane C．they should slow down their speed D．they are coming near to the speed limit
单项选择题17（）
A．thing B．work C．job D．duty
单项选择题What is the main topic of this passage（）
A．A person should rely on his friends for a business. B．A good name will bring you money. C．A company can make customers believe that it"s wonderful. D．A company should advertise everything to survive.
