龙山文化距今()年
A、6000.0
B、4000.0
C、2000.0
D、5000.0
参考答案:B
I can't understand ___________her like that.
A. you treat
B. you to treat
C. why treat
D. you treating
淋巴显像时显像剂的注入方式是()。
A.静脉注射
B.动脉注射
C.肌内注射
D.皮下注射
E.口服