Unit 9 When was it invented? Self check Self check 1 Fill in the blanks 1. I dont like eating chocolate. It tastes too _. 2. Mom added salt but it still wasnt _ enough. 3. I prefer lemons to oranges. I Like the _ taste. sweet salty sour 4. She likes _ cookies. They are hard, dry and easily broken. crispy Self Check (2:P73) The abacus was invented in the sixth century by Chinese people. The umbrella was invented about 4000 years ago in Assyria, China and Egypt. In Italy in 1854 , Ignatio Porro in
