保赔保险的特点有（）
A.附属性
B.流动性
C.互助性
D.无限制赔偿额
E.盈利性
参考答案：A, C, D
Tom is so lazy that it is the third time that he ______ late this week.
A．has came
B．is coming
C．came
D．has come
垂体门脉学说
