现在完成时态和一般现在时的区别?

问题描述:

现在完成时态和一般现在时的区别?
如何区别现在完成时态和一般现在时?
Guilin has been visited by so many tourists that some of it's
cultural sites ______ (not well protect).
这里用现在完成时态的被动呢还是一般现在时的被动呢
为什么?

应该用一般现在时的被动,因为陈述的是一个事实.