The number of red-crowned cranes is getting ___________.

A．small and small

B．little and little

C．smaller and smaller

D．less and less

患者经期口舌糜烂，口燥咽干，月经量少，色红；五心烦热，尿少色黄；舌红，少苔，脉细数。其证候是（）

A.肾阴虚证

B.肾阳虚证

C.胃阴虚证

D.胃热熏蒸证

E.阴虚火旺证