肝内胆道出血的前驱症状是（）
A.寒战
B.高热
C.黄疸
D.类似胆绞痛的剧烈腹痛
E.呕吐
参考答案：D
The clever boy made a hole in the wall, _____ he could see _____ was going on inside the house. [ ]
A. which; what
B. through which; what
C. through that; what
D. what; that
在环境影响评价的效益-费用评价方法中，( )把环境质量看成是一个生产要素。
A．资产价值法 B．人力资本法C．市场价值法 D．恢复费用法
