跖趾关节脱位，是指______与______构成的关节发生分离。临床上以______跖趾关节向背侧脱位多见。
参考答案：跖骨头 近节趾骨 第1
Principal White has been working in the school for about 20 years, ____all his energy to teaching and researching as well as the running of a healthy school.
A．devoted
B．devoting
C．to devote
D．devote
省级规划应当()。
A.重点安排好城乡结合部土地利用
B.合理划定城镇建设用地范围
C.确定规划期内土地利用目标和方针
D.实现省城内耕地总量动态平衡
E.重点控制城市用地规模
