椎基底动脉血栓形成不出现以下哪个症状
A．眩晕B．失语C．吞咽困难D．交叉性瘫痪E．眼球运动障碍
参考答案：B
Harrison Ford is thought to be one of the few movie stars ______ as a carpenter before．
A．to work
B．to be working
C．to have worked
D．to have been working
左心功能不全最早期的特征性体征是（）。
A.肝肿大
B.交替脉
C.颈静脉怒张
D.舒张早期奔马律
E.下肢浮肿
