Arul Mathur, an 11^th grade student in California could have found the answer to saving people’s homes when threatened by wildfires and other types of fires that could affect them and their property.

To best deal with wildfire “season”，he created a fire-activated extinguisher (灭火器) called F. A. C. E.. Basically, it can work as a single device that is able to protect fire-risk areas around someone’s house like in the kitchen or bedroom.

Recently moving with his family to California, he came face to face with the possibility of wildfires. When explaining his inspiration behind his invention, he said, “I heard about the hundreds of thousands of people, including my new friends, who abandoned their houses every year to flee from wildfires, but I never thought that I could be one of those people. Finally, in the summer of 2019, a wildfire threatened to force my family to leave our home. At that moment, I knew that I needed to do something about it.”

F. A. C. E. works through a sensor on the device. When heated up to a particular temperature, the chemicals inside burst and release a spray that stops fire spreading at least five to six feet in all directions with the help of a sprinkler (喷洒器) attached to it. When placed in certain strategic areas, they could actually work together in order to stop bush fires from turning into wildfires. Meanwhile, they could also stop a kitchen or living room fire from becoming a massive house fire.

This new solution to wildfires will be sold for $120 once production starts. Currently, the only other similar alternative for his invention is the automatic sprinkler systems that may be lavish for some families. They first need to be placed in the home during early construction of the house, and tend to cost around thousands of dollars.

【小题1】What made Mathur decide to invent F. A. C. E.?

A．His move to California.	B．His encounter with a wildfire.
C．The coming wildfire “season”.	D．The property losses of his friends.

【小题2】What does Paragraph 4 mainly talk about?

A．The advantages of the device.

B．The components of the device.

C．The working principle of the device.

D．The operating procedure of the device.

【小题3】What does the underlined word “lavish” in Paragraph 5 mean?

A．Complex.	B．Time-consuming.
C．Inefficient.	D．Costly.

【小题4】What’s the author’s purpose of writing this text?

A．To introduce a new invention.

B．To praise a teenager’s creativity.

C．To advertise a new fire extinguisher.

D．To suggest a new way of fighting fires.