What's New? A History of Invention, System 44

Something that happens is an __________________.

• exercise

• event

• activity

• answer

In "What's New? AS History of Invention", Sam is used to explain __________.

• inventions

• time lines

• science

• doctors

A bullet train _____________.

• is red

• goes very fast

• goes very slow

• has not been invented yet

To "design" is to ________.

• study the world

• move away

• read a book

• plan and create

In 1924, a man invented a __________ baseball bat.

• paper

• square

• soft

• metal

In 1964, fake ________ is invented.

• water

• air

• light

• grass

In 1885, someone first put ____________ on a bike.

• a dog

• a person

• a flower

• an engine

A time ________ lists events in time order.

• circle

• dot

• square

• line

Dr. Williams performed the first ________ surgery.

• open-heart

• flat-heart

• wide-heart

• closed-heart

The cars in the first car race ran on _______.

• milk

• mud

• steam

• sand