骨与关节结核的类型和发展过程可分为()
A.单纯骨结核
B.干骺端结核
C.单纯滑膜结核
D.松质骨结核
E.全关节结核
参考答案:A, C, E
I will ______ you a new bike.[ ]
A. buy
B. bought
C. buying
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