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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