警察是国家机器的重要组成部分,是阶级专政的重要工具。( )
参考答案:对
We are allowed _____ part-time jobs after school. [ ]
A. having
B. to have
C. had
D. to having
男,40岁,食欲欠佳、恶心、尿黄已1周,查血ALT(谷丙转氨酶)显著增高,直接胆红素增高,应考虑
A.胆石症B.肝硬化C.胆道梗阻D.急性肝炎E.胆囊炎