Inventions That Changed the World

What is an innovation?

• A mistake in an invention

• A new and creative improvement

• A type of machine

• An old tradition

Which of the following is an example of a device?

• A library

• A telephone

• A mountain

• A discovery

A breakthrough is…

• A slow improvement

• A sudden success or discovery

• A famous inventor

• A repeated failure

What does it mean to patent an invention?

• To destroy it

• To copy it

• To protect its idea legally

• To forget about it

The word impact most nearly means…

• Result or effect

• Shape or size

• Type of machine

• Time of invention

Which sentence is in the past simple?

• She has designed a new app.

• He invented the device in 2007.

• I have never used that machine.

• We have created a prototype.

Choose the sentence in present perfect:

• Alexander Graham Bell invented the telephone.

• We finished the test yesterday.

• They have improved the design.

• Thomas Edison built a lab in New Jersey.

Which sentence uses present perfect correctly?

• I have saw the new robot.

• She has make a new discovery.

• We have used this program before.

• He has go to the lab.

"They _ the final version last night."

• have completed

• completed

• has completed

• completes

"Scientists _ many useful things over the years."

• discovered

• have discovered

• had discovered

• discovers