In adventure of huckleberry finn where was cario?

You are reading an informational text for english class, and you find a lot of words you don't know. your teacher says you don't need to look up all of them in the dictionary, only the ones you need to get the main point of the text. how could text features you figure out which words to look up?

The point of view that london uses in white fang the reader understand the perspectives

What's my name? if you know you know