干骺端
参考答案：
骨干两端增宽部，由骨松质形成，骨小梁彼此交叉呈海绵状，周围为薄的骨皮质。
225. After a ________ , the author went on writing his novel. Which of the following cannot be put in the blank?
A．food
B．rest
C．pause
D．Break
增压是将空气压入发动机，获得更多功率和转矩的过程。
