The hotter the climate and the higher the airfield above sea level, the _______ the runways have to be.
A.shorter
B.longer
C.much short
D.more short
正确答案是B
The hotter the climate and the higher the airfield above sea level, the _______ the runways have to be.
A.shorter
B.longer
C.much short
D.more short
正确答案是B