西方美学传统中长期占主导地位的“模仿说”，其界定艺术的角度是（）
A.艺术起源
B.艺术本质
C.艺术功能
D.艺术接受
参考答案：B
As a young boy, he had to work in his spare time to pay for school, but he never _____. [ ]
A. gave up
B gave away
C. gave out
D. gave back
简述胫腓骨干骨折的康复治疗。
