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
断层与油气有何关系？
Politicians are skilled at themselves their critics. [ ]
A. protecting; with
B. protecting; from
C. defending; for
D. defending; against
