如果铁路在货物运到期限届满60天内，未将货物交付收货人时，收货人无须提出证据就可认为货物已经灭失。( )
参考答案：错
按要求改写句子。
1. When he was eight, he began to learn the accordion. （改为同义句）
______________ eight, he began to learn the accordion.
2. The girl looks after the baby well. （改为同义句）
The girl ______________ the baby.
3. It takes about 15 minutes to walk home.（对画线部分提问）
______________ it to walk home?
4. I went home after I finished my homework.（改为同义句）
I _____________ home until Ifinished my homework.
5. I think Liu Ying is not as tall as her sister.（同上）
I think her sister is _____________ Liu Ying.
下列关于投标文件补充、修改和撤回的表述，正确的是( )。
A．投标文件的补充和修改内容应当密封，可以在投标截止日期之后送达B．投标文件的补充和修改内容应当密封，在投标截止日期之前送达C．投标文件的撤回是指收回部分投标文件，或者放弃投标D．投标截止日期之后，投标人可以无条件地撤回已经递交的投标文件
