Read this excerpt from the preface of a book written about machines.

I have been fascinated by machines since I was a child. Playing in the creek behind my house, I used sticks, string, and plastic cups to create a pulley system for drawing up water. When I got older, my friends and I built ramps for our bikes, and sped down them with abandon. It was only natural that I became an engineer who designs machines for all sorts of tasks.

Based on this excerpt from the preface, which best explains why the author wrote the book?

The author used materials found around the house to make simple machines.
The childhood friends of the author were also interested in making and using machines.
The author has had a lifelong interest in machines and how to develop them for a variety of purposes.
As a child, the author enjoyed outdoor activities such as playing in a creek and riding on a bike.

When should readers refer to a dictionary instead of relying on context clues? select all that apply.when they have timeeach unfamiliar word they findwhen the surrounding words are unfamiliarwhen an unfamiliar word appears frequently

Determining sentence type match each sentence with its type. i looked over my shoulder, because ! had an eerie feeling simple the child ran to greet the dog, and the teddy bear fell to the ground. compound-complex the leaf broke loose from the gnarled branch complex while the moon was full, the wolves howled and the dogs slept. compound

Which part of the story shows how kiara and tanya's differences affect their friendship? kiara and tanya were the best of friends. when they were 10 years old, they always went everywhere together. all their friends knew that if they found one of them, they would find the other. anyone who didn't know them thought that they were twins because both kiara and tanya had long, silky red hair and pale complexions. they were even similar in height and build. they were more like sisters than friends. but as similar as they were in appearance, they were just as different when it came to their personalities. this difference didn't affect their friendship, at least not for a long time. kiara always got out and participated in activities and competitions. tanya was happiest when reading a book at home. kiara was outgoing and talkative. tanya was quiet and shy. kiara was popular, and people were drawn to her because of her ability to make quick friends. tanya hardly had any friends besides kiara. as they grew older, kiara managed to make a large group of friends. tanya, on the other hand, still remained shy and reserved. this difference in their personalities eventually caused a rift between the two friends. tanya would refuse invitations to parties and movies that kiara invited her to. she just didn't want to hang out with people she didn't know that well. kiara couldn't understand why. she thought tanya disliked her friends. eventually, kiara and tanya both realized that they had outgrown one another. they still remained friends, but they were not as close as they once had been.