输血时病人出现心前区压迫感时应首先考虑：
A．血栓性浅静脉炎B．血栓性深静脉炎C．游走性浅静脉炎D．血栓闭塞性脉管炎E．动脉硬化闭塞症
参考答案：C
– What do you think Sally will be when she grows up?
– She loves science so much. I think she’ll be an .
A. engineer B. actor C. English teacher
牙周探诊的最佳力量是
A．1～5g
B．10～15g
C．20～25g
D．30～35g
E．40～45g
