Skip to main content
Toggle navigation
testbig
Main navigation
Home
Reading
Listening
Speaking
Writing
Grammar
Submit
Register
User account menu
Log in
gomoros
Member for
6 years
My essays:
“Over time, the costs of processing go down because as organizations learn how to do things better, they become more efficient. In color film processing, for example, the cost of a 3-by-5 inch print fell from 50 cents for five-day service in 1970 to 20
66