【单选题】It was so quick and easy. A fourteen-year-old boy in Scottsdale, Arizona, put his $50 bill on a color copying machine. Within seconds he transformed $50 into $550, and he was ready to shop.Twenty year...
A.
you see microprinted words on the bill
B.
you see green ink from one direction and yellow from another on the bill
C.
you see a special line on the bill that runs from the top to the bottom and that has such words as "USA hundred"
【单选题】P runs a small business making and selling garden ornaments. He has identified what he states is the 'best and most effective method' of making the ornaments and forces his staff to use this process. ...