Ⅰ级钢筋端部设180°弯钩，弯钩增长值为（）。
A.6.25d
B.3d
C.7.25d
D.5d
参考答案：A
提出若头痛不愈可加引经药的医家是（）
A.李东垣
B.朱丹溪
C.张仲景
D.王肯堂
E.王清任
His hair is shorter than _____． [ ]
A. she's
B. her
C. she
D. hers
