An expansionary fiscal policy is most likely to include a(n):（）

A. Increase in government expenditures and a decrease n tax rates.

B. decrease in both government expenditures and tax rates.

C. increase in both government expenditures and tax rates.

男性，15岁，高热，右膝关节肿痛6天。膝关节穿刺抽出脓液。最宜采用的治疗措施是

A．使用抗生素加患肢固定
B．全身使用抗生素，关节穿刺、冲洗、注入抗生素加外固定
C．大量使用抗生素
D．抗生素加切开引流
E．抗生素加功能锻炼