单选题 Every town in America may have 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 Saturday mornings. From Monday through Friday they are usually open from 8: 30 to 4: 30.
If you know how much the postage for your letter, you can buy stamps from machines. Stamps are sold at many different prices, from one cent to many dollars. If you are not sure how much postage is for your letters, you can ask the clerk(职员). He or she will give you the stamps you need.
If you are sending your letters far away, write on the envelope that you want them to go by air or use an air-mail envelope. Remember that postage will be more expensive for a letter you want to send overseas.
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 you buy at a post office do not have pictures. They are also not to be sent outside the country.
Letters are an easy and cheap way to communicate(交流)with people in many different countries.

单选题 There is ______a post office in each town in America.
A. hardly B. usually C. nearly D. almost
【正确答案】 B
【答案解析】本题根据短文开头第一句即可作出选择,即在美国每个镇上都可能有一个邮局。 hardly是否定句,与句意不符。nearly和almost都表示“几乎,差不多”,若用在这里,就意味着“并不是每个镇上都有邮局”或“大多数镇上有邮局”,与句意和事实不符。
单选题 A post office is open in America.
A. on Saturday mornings
B. from Monday till Friday
C. every day from 8: 30 to 4: 30
D. from Monday to Friday and Saturday mornings
【正确答案】 D
【答案解析】根据第一段最后两句可作出选择,即周一至周五及周六上午邮局开门营业,故D为正确选择。
单选题 A post office sells ______in America.
A. stamps only
B. only stamps and postcards
C. stamps and envelopes
D. stamps, envelopes and postcards
【正确答案】 D
【答案解析】阅读第二、三、四段,我们可知邮局出售邮票、信封和明信片,很显然D是正确答案。
单选题 What can you do if you are not sure about the postage?
A. You can buy stamps from machines.
B. You can buy different stamps of different prices.
C. You can ask the clerk for help.
D. You can put more stamps on the envelopes.
【正确答案】 C
【答案解析】A项错误,这是在知道所需邮资的情况下做的;B、D两项均不合事实;C为正确答案,即:你不知道你的邮件需多少邮资时,可问邮局职员。