被称为乐圣的是谁?
参考答案:
贝多芬
I'm going to spend the winter vacation in Shanghai,_______I have relatives.
A.which
B.that
C.where
D.when
牙髓失活法最严重的并发症是
A.封药后疼痛
B.失活剂烧伤
C.急性牙髓炎
D.急性根尖炎
E.急性龈 * * 炎