阿胶的功效是（）
A.补血止血
B.补血行血
C.补血柔肝
D.补血益气
E.补血温肺
参考答案：A
什么是传感器？什么是变送器？
______, he always makes time for his family.
A. No matter he is busy B. No matter how busy he is
C. However he is busy C. However busy is he
