心房纤颤时，左心房内的球状血栓是
A．混合血栓
B．白色血栓
C．红色血栓
D．透明血栓
E．延续血栓
参考答案：A
No one believed his reason for being late he was caught in a traffic jam, made him embarrassed.
A．that; which
B．why; which
C．why; what
D．that; what
关于碳酸锂中毒的说法正确的是（）
A.肾脏疾病的影响
B.钠撷入不足
C.中度不会引起昏迷或死亡
D.患者自服过量
E.年老体差以及血锂浓度控制不当
