四类客运班线是指县境内的客运班线()
参考答案:错
若点P是正四面体A-BCD的面BCD上一点,且P到另三个面的距离分别为h1,h2,h3,正四面体A-BCD的高为h,则( )
A.h>h1+h2+h3
B.h=h1+h2+h3
C.h<h1+h2+h3
D.h1,h2,h3与h的关系不定
—Let’s have oranges. — ________.
A.That’s sound good B.That sound good C.That sounds good