根据《2000年国际贸易术语解释通则》的解释，采用D组术语成交，卖方没有办理货运保险的义务，所以卖方可不必提交保险单。 ( )
参考答案：对
It was not until she arrived at the classroom she realized she had forgotten her coursebook.
A．and she realized
B．which she realized
C．then she realized
D．that she realized
属于骨关节炎导致的畸形变是（）。
A.纽扣花样畸形
B.方形手
C.手关节尺侧偏斜
D.天鹅颈样畸形
E.杵状指
