现浇楼板负弯距钢筋要每个扣绑扎。( )
参考答案：对
This dictionary, a few pages __________ are missing, is of no use.
A．to which
B．in which
C．of which
D．among which
患者，男，55岁。慢性冠状动脉供血不足。其心电图诊断之一为“Ⅰ度房室传导阻滞(房室传导延缓)”。其心电图的表现应为
A．P波增宽B．P-R间期延长C．QRS波群时限延长D．ST段延长E．Q-T间期延长
