Vincent is a(an)      .He likes travelling to the places where there are few people.

A．writer

B．explorer

C．worker

D．teacher

南方早期营造杉木与檫树混交林，混交比例采用1∶1，混交方法采用行间混交，在林分生长过程中出现杉木被压现象，种间矛盾比较激烈，混交林不易成功。

请设计比较成功的杉木、檫树混交林模式。