Man has invented many interesting things.They've changed our lives a lot.The followings are four of the most interesting （1）

inventions

inventions

（invent） in history.
   The Montgolfier brothers launched the first hot air balloon in 1782.It was made of paper.Today hot air balloons are made of cloth or rubber instead （2）

of

of

paper.They used to help people travel.The （3）

first

first

（one） contact lenses（隱形眼鏡） were made of heavy dark glass.Then，in 1948，Kevin Tuohy made progress in contact lenses，but （4）

his

his

（he） contact lenses were still thick and hard.In the 1970s，50 scientists （5）

created

created

（create） the soft plastic contact lenses that many people wear today.
   In 1845，Stephen Perry made the first rubber band.Rubber bands are made of （6）

a

a

special kind of rubber.They are really （7）

practical

practical

（practice）.
   The first remote control wasn't so convenient.It had a long wire connected to the television.People tripped over（絆倒） the wire， （ 8）

so

so

no one liked the remote control.In 1955，Eugene Polley invented a wireless remote control.It used light （9）

to control

to control

（control） the television.It didn't work well on sunny days，but it made people's lives （10）

easier

easier

（easy） than before.