血管瘤的治疗方法包括()
A．硬化剂注射
B．外科切除
C．放射治疗
D．低温治疗
E．激光治疗
参考答案：A, B, C, D, E
攀枝花（如图）成为长江沿岸重要的钢铁工业基地，其主要的自然条件是
A．攀枝花地处山谷，地形平坦
B．有比较近便、丰富而优质的长江水
C．附近有丰富的煤、铁资源
D．地处西部，环境净化能力强，不易发生污染
An increase in which one of the following monetary measures would best complement fiscal measures that are designed to stimulate aggregate demand during a period of high unemployment（）
A. Reserve requirements.
B. Treasury securities held by the Federal Reserve.
C. The Federal Reserve’s discount rate.
