"十二刺"首见于（）
A.《针灸甲乙经》
B.《黄帝内经》
C.《难经》
D.《针经指南》
E.《针灸大成》
参考答案：B
—Mum, I don't think you should buy clothes _____ animal fur.
—Why? They look nice on me. [ ]
A. make of
B. make from
C. made of
D. made with
下列哪些格式的图像文件可以用作数字签名的签名外观？（）
A、BMP
B、GIF
C、PNG
D、PDF
