（）以上人民政府加强社会保险费的征收工作。
参考答案：县级
生长激素的作用是（）
A.促进骨髓的发育
B.促进软骨生长
C.促进脂肪代谢
D.刺激生长素分泌
E.刺激肝细胞分化
Jerry saw his dog limping on a bloody leg and jumped up the conclusion that it had been shot.
A．jumped over
B．jumped to
C．jumped for
D．jumped through
