肾后性肾功能衰竭，首选检查为
A．A型血病人B．B型血病人C．O型血病人D．O型或B型血病人E．O型或A型血病人
参考答案：B
The expert says ______ in performance can be applied successfully to a political career.
A．training B．trained C．to be trained D．being trained
网络传播
