Main Idea

Front

What did people use to clean their teeth before toothbrushes were invented?

Back

People used natural objects like small twigs to clean their teeth.

Front

What materials were the first toothbrushes made from?

Back

The first toothbrushes were made from bones and bristles from boars, horse hairs, or feathers.

Front

What are the bristles on most toothbrushes made from today?

Back

Most toothbrush bristles are made from nylon.

Front

In the sentence 'Because it rained, I got soaked,' what is the cause?

Back

The cause is 'it rained.'

Front

What text feature is indicated by a black line pointing to it?

Back

The text feature is a heading.

Front

What is a title page?

Back

A title page is a page at the beginning of a book that includes the title, author, and publisher.

Front

What is a glossary?

Back

A glossary is a list of terms and their definitions, usually found at the end of a book.

Front

What is the purpose of a heading in a text?

Back

A heading is used to indicate the main topic or section of the text.

Front

How do natural objects used for dental hygiene compare to modern toothbrushes?

Back

Natural objects were less effective and less hygienic compared to modern toothbrushes.

Front

What is the significance of using nylon in toothbrush bristles?

Back

Nylon bristles are more durable, effective, and hygienic compared to natural materials.