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一 根据课本P48－P49的故事，选择合适的单词，补全短文。
carry services buy paper difficult
Long ago, people didn't have money. They exchanged goods or 1.
Later, people used different forms of money, like shell money, knife money and copper coins. But metal coins were heavy and not easy to 3.
We still use paper money today. And we have bankbooks and cards. We can also use our mobile phones to pay. Money has changed a lot, but its job is still the same: to help us 5.
carry services buy paper difficult
Long ago, people didn't have money. They exchanged goods or 1.
services
. For example, a farmer could exchange three chickens for a pair of shoes. But sometimes it was 2. difficult
to get the things they wanted.Later, people used different forms of money, like shell money, knife money and copper coins. But metal coins were heavy and not easy to 3.
carry
. So people used 4. paper
money.We still use paper money today. And we have bankbooks and cards. We can also use our mobile phones to pay. Money has changed a lot, but its job is still the same: to help us 5.
buy
and sell.答案
1. services
2. difficult
3. carry
4. paper
5. buy
2. difficult
3. carry
4. paper
5. buy
