单项选择题
A．Reading a newspaper column B．Looking at a railway timetable C．Driving form New York to Boston D．Waiting for someone at the airport
A．Each flock of butterflies lays eggs in the same states. B．They start to lay eggs when they are nine months old. C．Each generation in a cycle lays eggs at a different place. D．Only the strongest can reach their destination to lay eggs.
A．Future product distribution B．Local employment policies C．Road and rail links for small towns D．Skilled workforce in the hilly region