单项选择题

A．Crowded air traffic.
B．The large size of airplanes.
C．Mistakes by air traffic controllers.
D．Bad weather.
<上一题 目录 下一题>
热门 试题

单项选择题
A．He lost his hearing forever.B．He regained his eyesight and hearing.C．He was hit by a car.D．He saw a miracle from the paper.
A．He lost his hearing forever.
B．He regained his eyesight and hearing.
C．He was hit by a car.
D．He saw a miracle from the paper.
单项选择题
A．insteadB．ratherC．fairlyD．partially
A．instead
B．rather
C．fairly
D．partially
相关试题