未形成事实扶养关系的继父母与继子女之间属于？
参考答案：
直系婚亲关系。
用______材料包装的货物去挪威，在挪威办理货物进口手续时必须提供证明。
A．草类B．旧编织材料制成的麻袋、打包麻布C．塑料D．以上三种
During his two-month stay in China, Tom never ______ a chance to practice his Chinese.
A. passed on B. passed up C. passed by D. passed out
