腰痛的致病病因有()
A.风
B.寒
C.湿
D.热
E.燥
参考答案:A, B, C, D
He's been________as judge in the State Supreme Court in California. [ ]
A. determined
B. appointed
C. admitted
D. assumed
数列1,0,1/2,0,1/3,…,0,1/n,……()。
A.收敛于2
B.收敛于1
C.收敛于0
D.发散