决明子的主治证是（）

A.目赤肿痛

B.瘰疬瘿瘤

C.热淋涩痛

D.肝火头痛

E.肠燥便秘

—Look! There is no grass and no soil in this area.What a sad _______!         

—Yes, we have to do something to change it.          

A. situation

B. show            

C. scene

D. chore