凉燥与寒邪致病的区别,主要在于
A.有无恶寒发热
B.有汗无汗
C.有无头痛
D.有无咽干鼻干
参考答案:D
地球上有多少昆虫生活?
The Water Cube is one of _____ sights in Beijing. [ ]
A. beautiful
B. more beautiful
C. most beautiful
D. the most beautiful