题目内容：

How many coins do you have in your pocket right now? Three? Two? Or one? With a phone card, you can make up to 200 calls without any charges at all．

★What do you do with it?

Go to a telephone box marked "Phone-card"．Put in your card to start, make your phone call and when you have finished, the screen will tell you how much is left on your card．It costs no extra for the cards, and the calls cost 10 p（便士） per unit, the same as any other pay-phone call．You can buy it in units of 10, 20, 40, 50, or 100．

★Appear in a shop nearby．

Near each card-phone place, you will find a shop where you can buy one．They are at bus, train or metro stations．At universities, hospitals, clubs, restaurants and shopping centers, you can also buy it．

★No more broken pay-phones．

It is possible that many pay-phones don't work because they have been damaged． There are no coins in a card-phone to excite the thieves' interest in it．So you are not probably to find a broken one．

Get a phone-card yourself and try it out．Or get a bigger wallet．

1.The passage is most probably ____．

         A．a warning                             B．a notice

         C．an advertisement                      D．an announcement

2.The underlined word "one" means ____．

         A．a shop            B．a coin            C．a pay-phone      D．a phone-card

3.It is suggested in the passage that you buy a phone-card because ____．

         A．you have got a bigger wallet than others

         B．it's convenient to make calls with a phone card

         C．the phone box might have been damaged

         D．there are many different kinds of phone-cards