Since we haven't got enough money available, _____ about sightseeing in that country. [ ]

A. it is no need talking  

B. it is no need to talk  

C. there is no need talking

D. there is no need to talk

含重金属的中药中毒时可用何种方法解毒

A．鸡蛋清
B．活性炭
C．浓茶
D．甘草、绿豆
E．透析支持疗法