函数$f\left(x\right)=\frac{\left(x-1\right)\ln \left(x-2\right)}{x-3}$的零点有（   ）

阅读判断。根据短文内容，判断下列句子的正与误。

Long long ago, there was no paper in the world. People had to write characters(汉字) in bamboo slips or stones.Then there was a man named Cai Lun who was a Chinese man. He made people use all kinds of things to invent paper. From then on, people can use paper to write on. Paper is a great invention. We always remember the great inventor Cai Lun. Nowadays paper is very useful in our work, study and our life.It really means a lot to human beings

“花下成千成百的蜜蜂嗡嗡地闹着”，这个“闹”字用得极妙，不禁使人想起古代诗人宋祁的一句诗：____。

我们要珍爱生命，必须保护我们共同的家园——地球。 （   ）