患者有偏瘫、偏身感觉障碍和偏盲，最可能有下述哪条血管闭塞
A．大脑前动脉B．大脑中动脉C．大脑后动脉D．内听动脉E．脊髓前动脉
参考答案：B
---What do you think of the film called So Young?
--- I think this is the most wonderful film _______ I have ever seen.
A．that
B．who
C．whom
D．what
饮水氟化的防龋效果应该是（）
A.恒牙和乳牙均好
B.恒牙优于乳牙
C.乳牙优于恒牙
D.前牙优于后牙
E.后牙优于前牙
