目前诊断半月板撕裂敏感性和特异性最高的影像学检查方法是（）。
A.X线平片
B.X线关节造影
C.MRI检查
D.CT
E.关节镜检查
参考答案：C
No one can walk the wire in the air without a bit of fear unless ______ very young. [ ]
A. having trained
B. trained
C. to be trained
D. being trained
吸水
