I have known my friend Rebecca for a long time．We first m{#blank#}1{#/blank#}at a friend's birthday party five years ago．We found out that we both liked music，s{#blank#}2{#/blank#}I asked Rebecca to come to my home one weekend．We listened to music together and soon became very good friends．We s{#blank#}3{#/blank#} almost every weekend doing homework and playing together．

    Three years ago．Rebecca's parents i{#blank#}4{#/blank#}me to go on a holiday with them．It was great．We spent three wonderful weeks in a cottage(小别墅)n{#blank#}5{#/blank#}a beautiful beach．Rebecca and I got up e{#blank#}6{#/blank#}every morning．We loved walking along the beach in the morning．We took a lot of p{#blank#}7{#/blank#}and had a lot of fun．

    Two years ago．I hurt my leg when I was learning to r{#blank#}8{#/blank#}a bike and had to spend a week in hospital．Rebecca came to see me every day．But last year,Rebecca's father changed his job,and they m{#blank#}9{#/blank#}to another town．Since then we haven't seen each other very much，but we have talked on the phone and we have w{#blank#}10{#/blank#}emails to each other．

    One day，Daniel and his uncle Bob went to the store together．Uncle Bob gave Daniel a one—dollar bill and told him he could buy{#blank#}1{#/blank#}(无论什么)he wanted with that money. Daniel picked out two chocolate candy bars which cost{#blank#}2{#/blank#}(五十)cents each．

    As they were{#blank#}3{#/blank#}(离开)，his uncle said that when he was a {#blank#}4{#/blank#}(孩子)he was able to buy five candy bars with one dollar．This was because back then，they only cost 20 cents each．Daniel became{#blank#}5{#/blank#} (惊奇的)．

    "You see，Daniel，the{#blank#}6{#/blank#}(价格)of all things usually goes up as time goes by．That's why one dollar earned today is more valuable than one dollar earned one year later．This is called the Time Value of Money．Do you understand?" "Not really，"Daniel replied{#blank#}7{#/blank#}(快地)．

    "Look at the candy bars in your{#blank#}8{#/blank#}(手)．When l was a kid，I could buy five of them with one dollar．But now，l can only buy two because the cost has {#blank#}9{#/blank#}(上涨)to 50 cents．In other words，the value of one dollar has dropped over the years．''

    Daniel nodded his head．Now he was a little {#blank#}10{#/blank#}(确信)what his uncle meant．Bob smiled．