芤脉与革脉的相同特点是( )
A．浮而中空
B．浮而无力
C．浮而弦硬
D．浮而不聚
E．浮而细软
参考答案：A
Your natural hair color begins to fade________you grow older, and in time you grow grey.[ ]
A. since
B. when
C. while
D. as
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