严重挤压伤可引起（）.
A.剧烈疼痛
B.骨筋膜综合征
C.休克
D.急性肾衰竭
E.脂肪栓塞
参考答案：A, B, C, D, E
曲线y=xex+2x+1在点（0，1）处的切线方程为 （ ）．
After retiring from her job. she has decided to _____ a language school _______ poor Migrant
workers' children.[ ]
A. set out; targeted
B. set about; targeted
C. set off; targeted
D. set up; targeting
