根据句意，写出括号内所给单词的适当形式空。

小题1:It’s ______________ (possible) for dogs to fly. Stop daydreaming, Eddie.

小题2:Most children are afraid of real ______________ (mouse), but they like Mickey Mouse.

小题3:The poor boy’s parents have been ______________ (die) for years.

小题4:If you want to see some ______________ (Europe) buildings, Rome is a good place to visit.

航空母舰是大规模战争的重要武器，灵活起降的飞机是它的主要攻击力之一。民航客机起飞时要在2.5min内使飞机从静止加速到44m/s；而舰载飞机借助于助推装置，在2s内就可把飞机从静止加速到82.5m/s，设飞机起飞时在跑道上做匀加速直线运动，则供客机起飞的跑道长度约是航空母舰的甲板跑道长度的（）

A.800倍

B.80倍

C.400倍

D.40倍