单项选择题A．Make sure what television is best for her.B．Ask for a cheaper price on the television.C．Try a different store.D．Be satisfied with what she has.

单项选择题A．Aviation and Transportation Security Act was passed.B．Ensuring the safety of passengers and aircraft became a major concern at airports.C．Airport security became the responsibility of the federal government.D．Security personnel required each passenger show photo identification before entering an aircraft.