Question

Chinese bread is usually light and sweet,she can't eat bread like__

为什么是that而不是it

Answer 1

1. like that意思是“像那样的”，that泛指不可数名词Chinese bread.
2. 而it特指原来的单个物体且必须是可数名词单数，但是Chinese bread一则为不可数名词，而且也不是指某块特指的面包。

Answer 2

that 在这里相当于that kind of bread/chinese bread，而it 只是可以指代上文提到过的某一种事物，意义非常狭隘，