Ⅴ. Read and tick. 阅读短文，勾出正确答案。
Long ago, people didn't have money. They got the things they needed by barter (以物易物). Barter means trading one thing for another. For example, when a farmer wanted to get some fish, he would take grain to a fisherman who needed grain at the same time.
But barter had big problems. If the fisherman didn't want grain, they couldn't trade. Sometimes, things were hard to carry, such as a cow. It was not easy to take it everywhere to trade. So trade was difficult in ancient (古代的) times.
Later, people started to use some small, useful things as money, such as shells, stones or metals (金属). This helped people trade more easily.
1. What's the meaning of the word "trade"?
购买 交易；互相交换
2. What does this passage talk about?
The history of barter. Why people created (创造) money.
3. When there was no money, how did people get the things they needed?
They made everything by themselves.
They used things to trade with each other.
4. Why was it hard for people to trade long ago without money?
Because they had enough things.
Because the other person might not want their things.

1. 勾选“交易；互相交换”
2. 勾选“Why people created (创造) money.”
3. 勾选“They used things to trade with each other.”
4. 勾选“Because the other person might not want their things.”

1. 根据文中“Barter means trading one thing for another.”的描述，trade指的是将物品互相交换的行为，对应词义“交易；互相交换”。
2. 短文先介绍了没有货币的年代以物易物存在很多弊端，之后人们才开始使用便于交易的物品作为货币，全文核心是说明人们创造货币的原因，并非只介绍以物易物的历史。
3. 文中明确说明没有货币时，人们通过以物易物、互相交换物品的方式获得自己需要的东西，并非所有物品都靠自己制作。
4. 文中提到如果交易的另一方不需要自己拿出的物品，交易就无法完成，这是早期无货币交易困难的原因，“有足够的物品”并不是交易困难的原因。