填空题 ● Currency before
Coins:
◇ The oldest coins appeared over 1 years ago.
◇ They were made of 2 like gold and silver.
◇ The 3 of a person or animal was stamped on each coin to indicate its value.
Paper bills:
◇ First example, the Chinese government started making 4 , which could be traded for coins in 5
● Currency today
◇ A 6 of coins and paper money.
◇ Paper bills have different sizes and colors and their 7 is easy to identify.
● Varieties of currency in history
◇ 8 were the lightest money ever used on the Pacific island of Santa Cruz.
◇ 9 were the heaviest money ever used on the Pacific island of Yap, some of which weighed over 500 pounds.
◇ The smallest money was made of metal. The coins were smaller than 10 .