A thesaurs is a source used to look up synonyms of a word.
For eample, in the sentence, "I like bikes." you can use a thesaurus to find another word for the word "like" and say, "I enjoy bikes" or something similar to the nature!
When providing an objective summary of a text, writers should directly quote the text. avoid central ideas. include their opinions. exclude personal opinions.
exclude personal opinions
A. How fast does light move at different points in a black hole?
Could either be an exclamation mark or just a period. It depends on the context and only so little was given