单项选择题A.He sometimes considers changing majors.B.Most people frequently change their minds.C.He rearranged his artwork a while ago.D.Everyone’s inside for a short time.
单项选择题A.The new law expanded the number of baggage screeners.B.It required that security personnel operate metal detectors and X-ray machines for possible weapons or illegal substances.C.It required that ail passenger luggage, including checked luggage, be screened.D.It required that all checked luggage be put through special explosives-detecting devices.