判断以下句子提供的信息是正确，还是错误，还是没有提及
1．It is possible to preserve everything from our past.
A．Right. B．Wrong. C．Not mentioned.
2．Keeping the right balance between progress and the protection of cultural sites is hard.
A．Right. B．Wrong. C．Not mentioned.
3．The experts investigated the issue and then signed a document.
A．Right. B．Wrong. C．Not mentioned.
4．The experts began to save the Egyptian buildings in 1960.
A．Right. B．Wrong. C．Not mentioned.
5．The project brought together governments and environmentalists from around the world including China.
A．Right. B．Wrong. C．Not mentioned.
[答案] 1－5 BABAC
