A.左端下降
B.右端下降
C.杠杆仍然平衡
D.条件不足,无法判断
答案:A
患儿,男,8岁,车祸伤致左上臂疼痛、畸形,出现腕下垂,首先考虑的诊断是
A.肱骨骨折伴腋神经损伤
B.肱骨干骨折伴桡神经损伤
C.肱骨骨折伴尺神经损伤
D.肱骨骨折伴肌皮神经损伤
E.肱骨骨折伴正中神经损伤
—_______ did you stay in that city?
—For about two years. [ ]
A. How often
B. How many
C. How long
D. How much