锁订座位PNR的目的是( )。
A、预留邮件或货物吨位AB
暂无解析
2004年,中国货物出口、货物进口排名前三位的国家和地区分别是()
Our teachers made us ________a lot of homework after school.
我国在对外贸易经营者资格方面实行的原则是______
“改革”与“开放”的交汇点是______
________, the first settlers found in New Zealand many strange birds and animals that exist nowhere else in the world.