曼氏迭宫绦虫成虫头节有
A．吸盘
B．头沟
C．口唇
D．吸槽
E．口囊
参考答案：D
— Who helped Mark with his English?
— _______, he taught himself.
A．Anybody
B．Nobody
C．Somebody
D．Everybody
行包事故立案时，应如何编制行包事故记录？
