多发展为根尖周病的病是

A．牙周病

B．龋病

C．牙龈炎

D．牙髓病

E．扁平苔癣

Pall is a poor man with            money, but            friends. He is always happy. [ ]

A.a little; much

B.little; many

C.many; much

D.many; little