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These amazing"smart"wallets can change shape to stop you spending money.When the festival season draws __1__,it is __2__ to have no idea about how much you are spending.But now an inventor has
solved the problem with a set of"smart"wallets.
One of the wallets becomes small when your bank balance is too low in an effort to __3__ you from
spending.The wallet becomes larger or smaller depending on how much money its owner has.Another has a hinge which becomes tighter and tighter to open when you have __4__ money.Once you have __5__ in your account,the hinge simply keeps the wallet shut.
The idea behind all the wallets is that we need to __6__ ourselves each time that we spend our __7__ money rather than just paying with a credit card and forgetting about it.
They are now at the __8__ stage.All the wallets have a tiny computer inside them and use a Bluetooth
that __9__ to the users' mobile phones or the Internet and their bank account information.This __10__ that the information in the computer inside the wallet is changing __11__ how much money the user has,and
can act accordingly.
On his blog Mr.Kesmer,the designer,wrote that the wallets were __12__ to connect us with the money that we have left."We have trouble __13__ our desire to spend money.Sometimes we want to save money,but there's a gap between our decision and the final results.This gap is becoming increasingly __14__ as
the money becomes virtual."When we're shopping,do we know what our bank balance is,or __15__we're overspending?Our existing senses are not enough to warn us.
(     )1．A.first
(     )2．A.unbelievable
(     )3．A.prevent
(     )4．A.more
(     )5．A.nothing
(     )6．A.relax
(     )7．A.precious
(     )8．A.development
(     )9．A.leads
(     )10．A.teaches
(     )11．A.for
(     )12．A.designed
(     )13．A.spreading
(     )14．A.lighter
(     )15．A.when

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