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Every town in the United States has a post office. Some are very small, and you may also find them in the corner of a shop. Others are large buildings. They are open five days a week and on Saturday mornings. From Monday to Friday they are usually open from 8:30 to 16:30.

If you know how much the postage (邮资)is for your letter, you can buy stamps at any window.   In some post offices you can buy stamps from machines (机器). Stamps are sold at many different prices, from one cent (美分) to many dollars. If you are not sure how much postage is for your letter, you may ask the man or the woman in the post office for help. He or she will give you the stamps you need. If you are sending your letters far away, you should use airmail envelopes. Remember that postage will be more expensive for a letter to be sent outside the country.

At a post office you can also buy postcards. A postcard is cheaper than a letter. Usually, the price of postage for a postcard is about half that of a letter. The postcards that you buy at   a post office do not have pictures. However, also they are not to be sent outside the country.

1．The passage tells us that we can find ________ easily in the USA. (   )

A．post office

B．small shops

C．different banks

D．large buildings

2．The post office in the USA are open ________ hours a day. (   )

A．six

B．five

C．seven

D．eight

3．If you are not sure how much the postage is for your letter, you can ________.   (   )

A．send a cheap postcard instead of your letter

B．get in touch with somebody you know in the post office

C．go and buy stamps from the machine in the post office

D．ask the man or the woman in the post office for help

4．The price of postage for ________ is more expensive. (   )

A．a postcard with pictures	B．a beautiful postcard
C．a letter by airmail	D．a letter written on envelope

5．The passage tells us something about ________ in the USA. (   )

A．the post

B．postcards

C．the postage

D．letters