选择适当的词(组)并用适当形式完成短文，每个词(组)只能使用一次，其中有两个词(组)是多余的。把所选词(组)的适当形式写在下方横线上。温馨提示：每空词数不限。

　　People use money 　　1　　 food, books, bicycles and hundreds of other things they 　　2　　．When they 　　3　　 ,they usually get paid in money．

　　Most of the money used today 　　4　　 metal or paper．But in ancient times people often used all kinds of things as money．One of the first kinds of money was shells(贝壳)．

　　In ancient China, cloth and knives 　　5　　 money．Elephant tusks(象牙),monkey tails(尾巴)and salt were used in some parts of Africa．Rice was also a kind of money used by the ancient people on some islands．Cows and other animals were used as money．too．

　　The first copper(铜)coins 　　6　　 China．They were round and had a square(正方的)hole in the center．Different countries have used different metals for their money．Later some countries 　　7　　 to make coins of gold and silver(银)．But gold, silver and copper were heavy 　　8　　 when people needed a lot of coins to buy something expensive．The Chinese were the first 　　9　　 paper money．The first paper money didn't 　　10　　 like the paper money we use today．

选用方框中词的适当形式填空．

　　Life in the 21^st century 　　1　　 different from life in the 20^th century, because many changes will 　　2　　 in the new century, but what will the changes be?

　　The population is 　　3　　 fast．There will be more and more people in the world and most 　　4　　 them will live longer than before．Computer will be much smaller and 　　5　　, and there will be 　　6　　 least one in every home．And computer studies will be one of the important 　　7　　 in school．

　　People will work 　　8　　 hours than they did in the 20^th century, and they will have more free time for sports, 　　9　　 TV and traveling．Traveling will be much cheaper and easier．And many more people will go to other 　　10　　 for holidays．