In fact, people will feel very comfortable if the temperature in winter is _______.

A．a cabinet member
B．the national police chief
C．a lawmaker
D．a Muslim scholar

A．A revolutionary NASA jet was destroyed in its first flight.
B．A booster rocket veered out of control and tumlJled to the ground.
C．A booster rocket was destroyed after it fulfilled the task.
D．A revolutionary NASA jet was destroyed after many flights.