引起醛固酮增加的物质是（）
A.血管紧张素Ⅰ
B.血管紧张素Ⅱ
C.血管紧张素Ⅲ
D.肾素
E.ACE
参考答案：B
His brother _____ in the army for two years. [ ]
A. joined
B. took part
C. served
D. served for
春节期间，执勤交警向司机发放印有交通知识的贺年片。对此，您怎么看？
