气行血功能失常可见（）
A．气虚血少
B．气虚血瘀
C．气虚出血
D．气随血脱
E．血虚气亏
参考答案：B
--HI, Tom. It’s a long time since we met last time. Is everything going well?
--Oh, I _____ for the final examination for weeks and I will be free next week.
--Good luck!
A．review
B．reviewed
C．am reviewing
D．have been reviewing
遵守"基准统一"原则，可以避免产生基准不重合误差。
