房性期前收缩是指激动起源于窦房结以外任何部位的一种被动性异位心律。()
参考答案:错
The young actress looked so charming in her beautiful dress that we took
________ pictures with her.
A.a great many of
B.a good many
C.the number of
D.a large amount of
根据2011年人民银行总行会议精神和工作思路,今后征信工作的重点由以前的侧重业务服务转向监管与服务并重。