71   It is divided into two types: short term memory and long term memory. Short term memory helps the brain to remember the information from a few seconds to a few minutes, for example, searching a phone number in the phone directory. This type of information is not stored for a long time, and slips from the brain.    72    

      73    There is no exact definition of brain exercises. The key to brain exercises is to stimulate(刺激) the gray cells of our mind. For example, trying out different problem solving exercises can be a good practice for improving the analytical skills of brain.   74   If you regularly exercise it, you will develop a good body, or else you will have an unfit body, and thus, our brain needs exercises regularly. Here are some memory improvement tips for adults:

●Regular exercises help to keep away diseases that are harmful to the memory. Besides, regular exercising improves the feeling of well-being and improves blood circulation to the brain.

●Don't be stressed, as stress holds back the ability of the mind to concentrate. A stress-free mind will collect and store more information that a stressed mind, so avoid being over-stressed. But in modern times people have great pressure from work and life.    75   . Sleep is necessary for keeping the mind and body fit and the side effects of lack of sleep include a lack of concentration.

Ask your doctors for advice on memory.

Developing good sleeping habits helps a lot.

The memory is just like our body in some way.

Memory is the remembering of any information taken in by the brain.

Not all people have the power to recite so many things at a time.

Long term memory, on the other hand, is the memory where we make conscious efforts to keep the information for a long time.

Brain exercises are one of the simplest ways of improving memory power.

_______71_______ It is a very happy day for many boys and girls. Before the term ends in some schools, the children act a nativity (基督诞生) or "birth" play, showing how Jesus was born in a stable.（马棚）.
On the twenty-fourth of December, all children are very excited.______72____ The younger children think that Father Christmas will come down the chimney of fireplace, so they hang up a sock for him to put presents in. The greedy ones even hang up a pillowcase or a sack to try to get more presents.________73_____
On Christmas morning, the children wake up very early. Some even turn on the light at two o'clock, and most of them are awake by six o'clock although there is no light in England for another hour or two at this time of the year.
_____74______ At about one o'clock in the afternoon, the Christmas dinner is brought in._____75______ Children search in their Christmas pudding for new coins which are hidden in it. The rest of the day is full of games and eating until the happiness of all Christian holidays comes to an end.

A．People are often busy going shopping.

B．The turkey or chicken is quickly eaten.

C．Now the Chinese people also celebrate Christmas.

D．Children look for their presents, and the young ones play while the dinner is prepared.

E. Later that night, Father or Mother will put presents in the sock, and leave others at the side of the bed.
F. Usually they are sent to bed early so that their parents can get the presents ready.
G. Christmas Day falls on the twenty-fifth of December.

71__ One of the best things you can possibly do is to start you own club．It’s great fun especially if you are the sort of person who feels there’s never anything to do during the school holidays．

The first thing you need to come up with is an idea for your club． 72 . Pets, clothes, pop music or dancing groups, sports, making things? The list is endless．

Next you need some friends to be in your club with you．  73 .  All you need is three or four other people who are interested in the same thing as you．

   74  . You should all sit down somewhere together with lots of pieces of paper and write down every name you can think up．That’ll keep you busy for ages．

At your first meeting you should make up a rule book．And the first rule should be no grown-ups or little/big brothers or sisters! The best clubs are always secret!

Now you have just about everything you need, except membership cards．These are very important and again you can spend a lot of time making them．    75  .Why not leave some space for a photo of yourself? That will make the membership card really look like it．

So there you are, get clubbing! Once you get started you’ll think of loads of more interesting things to do!

A.  That’s easy．

B.  Enjoy your own club!

C.  Invite a designer to join you．

D.  What are you interest in?

E.  Some vacation is coming．

F.  Then you need to pick a name for your club．

G.  Use a bright thick pen to make a special design．

 

71  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.    72 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. 73    Different countries have used different metals and designs for their money. 74  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.  75   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.

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

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

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

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

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

F. They began to use paper money.

G. Today anyone will accept money in exchange for goods and services.

 

_______71_______ It is a very happy day for many boys and girls. Before the term ends in some schools, the children act a nativity (基督诞生) or "birth" play, showing how Jesus was born in a stable.（马棚）.

On the twenty-fourth of December, all children are very excited.______72____ The younger children think that Father Christmas will come down the chimney of fireplace, so they hang up a sock for him to put presents in. The greedy ones even hang up a pillowcase or a sack to try to get more presents.________73_____

On Christmas morning, the children wake up very early. Some even turn on the light at two o'clock, and most of them are awake by six o'clock although there is no light in England for another hour or two at this time of the year.

_____74______ At about one o'clock in the afternoon, the Christmas dinner is brought in._____75______ Children search in their Christmas pudding for new coins which are hidden in it. The rest of the day is full of games and eating until the happiness of all Christian holidays comes to an end.

A．People are often busy going shopping.

B．The turkey or chicken is quickly eaten.

C．Now the Chinese people also celebrate Christmas.

D．Children look for their presents, and the young ones play while the dinner is prepared.

E. Later that night, Father or Mother will put presents in the sock, and leave others at the side of the bed.

F. Usually they are sent to bed early so that their parents can get the presents ready.

G. Christmas Day falls on the twenty-fifth of December.