训练创新能力的途径包括()
A、不断提高素质
B、增强创新意识
C、平时积累小创新
D、保持身体健康
参考答案:A, B, C
— The floor is dirty. Can anyone clean it?
— _______ I do it all the time. [ ]
A. Don't mention it.
B. Why you?
C. Not sure
D. Not me again.
按计划免疫程序7岁小儿应复种()
A.脊髓灰质炎疫苗
B.乙肝疫苗
C.麻疹疫苗
D.百白破混合制剂
E.流行性腮腺炎疫苗