IV. 閱讀測驗 (每題 2 分，共 10 分)：                                          “Signs Speak Louder than Words”   You speak and write in words. The messages are then sent and received. Peoplehave been using words to communicate for so long. But what about communicationwithout the use of words?   Wear a smile, and you tell people you are in a good mood. You cry, and others knowyou feel down. If you raise your hand, the teacher gives you a chance to speak up or ask aquestion. In some cultures, you shake your head to say no and you nod to agree.   These are not the only things that carry messages. Signs may speak louder thanwords. For example, when the traffic lights turn red, car drivers have to stop, or a policeofficer may ask them to pull over. A sign on the wall may have smokers put out theircigarettes or else they will be fined. Maybe it’s the first time you have realized that thesesigns speak to you. Anything else?   Artists paint to show their love for the evening sunshine. People draw to show theiranger at wars and the bittersweetness of love. And the list goes on.
【題組】71.( ) The article is mainly about _____.
(A) what signs are used for
(B) how people communicate by gestures
(C) how people use words to express themselves
(D) how people show their ideas or feelings without words