党员如果没有正当理由，连续多长时间不参加党的组织生活，或不交纳党费，或不做党所分配的工作，就被认为是自行脱党？
参考答案：
连续6个月。
－The changes are good for people.
－______________________. I like the present transport but I dislike the pollution.
A．Yes, I agree with you.
B．In some ways, I agree with you.
C．No, you are wrong.
D．No, I agree with you.
牙齿发育异常不包括以下哪项（）
A.数目异常
B.形态异常
C.颜色异常
D.结构异常
E.萌出异常
