《出境货物报检单》的“启运地”一栏应填写装运本批货物离境的交通工具的启运口岸。（）
参考答案：对
The man we followed suddenly stopped ad looked as if ______whether he was going I the right direction.
A．seeing
B．having seen
C．to have see
D．to see
甲烷化催化剂活性衰退的主要表现是什么？
