The house rent is ____ higher. I get about half the space I had at home but I’ll have to pay _____ here.

A．far less; as much three times 　　　

B．far more; much as three times

C．little; three times as much 　　　

D．much; three times as much

患牙面有深的龋洞，平时没有疼痛，有食物嵌入后剧烈疼痛，探诊可探及穿髓孔引起剧烈的疼痛，叩诊患牙有不适感，表明（）

A.牙髓正常

B.牙髓坏死

C.可复性牙髓炎

D.牙髓钙化

E.慢性牙髓炎