14．
Read the passage and fill in the blanks with proper words．（在短文的空格內(nèi)填入恰當?shù)脑~，使其內(nèi)容通順，每空格限填一詞，首字母已給）
Have you ever written someone a note？Have you ever sent an email？If so，you were sending a message．People have always found ways to send messages to each other．The way we send messages has c（71）hanged over time．Each change has allowed people to send messages farther and faster．
Beating on a drum was one of the earliest ways to send a message．People beat on logs with large sticks．This sent signals a long distance．Different drumbeats meant different things．One might send a warning of d（72）anger．Another might announce that a meeting was going to take place．
Over time，people developed written language．Written messages became the first mail．The first mail carriers carried mail on f（73）oot．These runners ran long distances to carry mail．Later，horses were used to carry mail．Trains then replaced horses．Mail is still carried today．Most mail is now carried on trucks and planes．
Over 150years ago，a man found a way to send signals over a wire （電線）．His invention was called the telegraph．The signals he used were known as Morse code．More than 30years later，someone invented the telephone．Using the telephone，people could send v（74）oice messages over a wire．
Once people found ways to send signals through the air w（75）ithout wire，new kinds of message senders were invented．One kind was the walkie-talkie．It got its name because you didn't have to stay in one place to use it．You could"walk and talk．"Today，many people carry wireless telephones called cell phones．These phones are very small and can be carried in a pocket．Now people can make phone calls from almost a（76）nywhere．The latest way to send messages is the Internet．Internet messages are called email．An email can be sent to someone on the other side of the world in an instant．
One thing is certain．People will always send messages to each other．Message sending has changed a great deal since e（77）mail messages were first sent．How do you think messages will be sent in the future？
