肘关节后脱位后的特征表现是
A. 活动障碍
B. 疼痛
C. 肿胀及淤血
D. 肘后三点关系失常
E. 尺神经麻痹
He stayed at home today because____ a toothache (牙疼)
Young people like to take part____ sports activities (体育活动)
Mary’s moved to a new place and hopes she can make as many friends____ possible
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