__46   People use money to buy food, furniture，books，bicycles and hundreds of other things they need or want. When they work, they usually get paid in money．

Most of the money today is made of metal or paper．  47   One of the first kinds of money was shells．

Shells were not the only things used as money．In China，cloth and knives were used. In the Philippine Islands, rice was used as money for a long time. Elephant tusks，monkey tails and salt were used as money in parts of Africa．

The first metal coins were made in China, They were round and had a square hole in the centre．  48   

Different countries have used different metals and designs for their money．  49   Sweden and Russia used copper(铜) to make their money. Later some countries began to make coins of gold and silver.

But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money．__ 50   The first paper money looked more like a note from one person to another than the paper money used today.

Money has an interesting history from the days of shell money until today．

 A．Today anyone will accept money in exchange for goods and service．

B．The first coins in England were made of tin(锡)．

C．But people used to use all kinds of things as money．

 D．Money, as we know, is all made of paper.

E．They began to use paper money.

F.  People strung(串连) them together and carried them from place to place．

G．No one knows for certain when people began to use money．

Today anyone will accept money in exchange for goods and services. People use money to buy food, furniture, books, bicycles and hundreds of other things we need or want. When they work, they usually get paid in money.

Lots of the money today is made of paper. But people used to use all kinds of things as money. One of the first kinds of money was shells. Shells were not the only things used as money.

In China, cloth and knives were used. In the Philippine Islands, rice was used as money for  a long time. Some Africans once used elephant tusks, monkey tails, and salt as money.

The first metal coins were made in China. They were round and had a square hole in the center. Different countries have used different metals and designs for their money. Later, countries began to make coins of gold and silver.

But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money. They began to use paper money. The first paper money looked more like a note from one person to another than the paper money used today.

Money has had an interesting history, from the days of shell money until today.

In the Philippines Islands ______ was once used as money.

A. rice   B. knife   C. cloth    D. wheat

What was first used as money? ______.

A. Elephants tusks   B. Cloth   C. Salt   D. Shells

The first metal coins looked like ______.

A. square-shaped with some designs on them

B. square-shaped with a round hole in the center

C. round-shaped with a square hole in the middle

D. round-shaped with a round hole in the middle

The first paper money ______.

A. was passed from west Asia to China   B. looked like a note used today

C. was first used in Europe            D. looked like a piece of fur

We can infer from the passage that ______.

A. paper money isn’t difficult to make  

B. money must be suited to carry

C. people need money to exchange goods with each other

D. people prefer metal coins to paper notes

Planting trees around poultry farms can improve air and water quality -- and relations with neighbors. Research has shown that just three rows of trees near poultry houses can reduce the release of dust and ammonia(氨). They can also reduce the strong smell of ammonia gas.

The trees take dust, ammonia and odors in their leaves. They also provide shade from the sun, so they reduce cooling costs in summer. And they act as a windbreak, so they reduce heating costs in winter. Trees can also improve water quality around farms by removing pollutions from soil and groundwater.

Several years ago, people were objecting to the odor of poultry farms on the Delmarva Peninsula in the eastern United State s. Delmarva is where the states of Delaware, Maryland and Virginia come together. Two thousand farms there can each house an average of seventy-five thousand chickens.

Traditionally the farms used windows to provide fresh air in the chicken houses. Farmers rarely planted trees or tall crops around the buildings, so there would be no barrier to the airflow. But then farms began to use new ventilation systems. Instead of windows, the new systems used tunnel fans to circulate air. The fans directed airflow from the poultry houses toward the homes of neighbors.

Researchers began dealing with the problem in two thousand. They found that over a period of six years, planting three rows of trees reduced total dust and ammonia by more than half. And they found that smells were reduced by eighteen percent.

Farmers may think trees will take too long to grow and be effective. But some trees can grow quickly. At least one-third of the Delmarva farms have planted trees, technically known as vegetative environmental buffers. The idea offers a way to cut pollution, save money and energy, and make the neighbors happy.

1.The second paragraph mainly tells us ______.

2.The word “odor” in paragraph 3 means ______.

3.The farms on the Delmarva Peninsula used to use ______ in chicken houses to provide fresh air.

4.It can be learned from the last two paragraphs that ______.

【小题1】   People use money to buy food, furniture, books, bicycles and hundreds of other things they need or want. When they work, they usually get paid in money.
Most of the money today is made of metal or paper.   【小题2】 One of the first kinds of money was shells.
Shells were not the only things used as money. In China, cloth and knives were used. In the Philippine Islands, rice was used as money for a long time. Elephant tusks, monkey tails and salt were used as money in parts of Africa.
The first metal coins were made in China. They were round and had a square hole in the centre. 【小题3】    Different countries have used different metals and designs for their money. 【小题4】  Sweden and Russia used copper (铜) to make their money. Later some countries began to make coins of gold and silver.
But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money. 【小题5】   The first paper money looked more like a note from one person to another than the paper money used today.
Money has had an interesting history from the days of shell money until today.

Today anyone will accept money in exchange for goods and services.People use money to buy food, furniture,books,bicycles and hundreds of other things they need or want. When they work, they usually get paid in money.

Most of the money today is made of metal(金属) or paper. But people used to use all kinds of things as money. One of the first kinds of money was shells.

Shells were not the only things used as money. In China , cloth and knives were used. In the Phillipine Islands, rice was used as money for a long time. Elephant tusks,monkey tails and salt were used as money in parts of Africa.

The first metal coins were made in China. They were round and had a square hole in  the centre.People strung(串联)them together and carried them from place to place.

Different countries have used different metals  and designs for their money. The first coins in England were made of tin(锡).Sweden and Russia used copper(铜)to make their money. Later some countries began to make coins of gold and silver.

But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money. They began to use paper money. The first paper money looked more like note from one person to another than the paper money used today.

Money has had an interesting history from the days of shell money until today.

1.The main use of money is that _________.

2.What did the first Chinese metal coins look like?

3.Who thought of a way to use paper money first?

4.The best title of this passage should be ________.