选择性动脉栓塞术控制出血常用于（）
A.外伤性出血
B.上消化道出血
C.肿瘤出血
D.溃疡出血
E.以上都不适用
参考答案：A
面向对象的模型中，最基本的概念是对象和 【4】 。
The sales manager of the company suggested more money is to spent in a more effective advertising campaign and better packaging design.
A．is spending on
B．will be spent in
C．will be spent on
D．be spent on
