What security features have been added to banknotes to prevent them being copied?
A. silver foil
B. intricate patterns
C. portrait of president
D. water mark
E. special paper
查看答案
Swapping means bartering
A. 对
B. 错
Chinese people used to use rice as money.
A. 对
B. 错
Western people used coins instead of gold because they were easier to carry around.
A. 对
B. 错
Nowadays, most of the money is invisible.
A. 对
B. 错