甲状腺素的不良反应是
A．诱发心绞痛B．粒细胞缺乏C．甲状腺功能减退D．血管神经性水肿E．肝功能不良
参考答案：A
—Look! It ________ be the new woman manager.
—It ________ be her. She has just left for Shanghai. [ ]
A. can; mustn't
B. must; can't
C. must; mustn't
D. can't; must
V带传动中，动力的传递是依靠张紧的带轮上的带与带轮之间的摩擦力来传递的。
