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
