Braintruster

 

Fill in the blanks: 

1. The first working  airplane    was invented and designed by the Wright brothers, Wilbur wright and Orville Wright.

2. Louis Braille invented the  braille    , a coded system of raised dots that are used by the blind to read.

3.   Telephone , one of the most important communication devices was invented by Alexander Graham Bell.

4. Johannes Gutenburg made printing of books possible by inventing the first printing press   .

5. The   barbie doll  was invented by Ruth handler, whose daughter's name was Barbara.

6. Ray Tomlinson invented internet based  e-mail  .

7. Earle Dickson invented the band - aid  . The fact that his wife was always cutting her fingers while working in the kitchen led him to the invention.

8. The idea of a  blood - bank  was initiated by Dr. Charles Richard Drew. This ground - breaking idea has saved many lives, and will continue doing so forever.