1. A person smiles to show____
　　[A] he is kind and useful
　　[B] he is happy all the time
　　[C] he is ready to talk with you
　　[D] he sees something funny
　　2. According to the text, troubles in communication may result from____
　　[A] a closed body position
　　[B] an open body position
　　[C] no smile
　　[D] the main "sign senders"
　　3. Leaning back with your hands behind your head in deep thought while a person is talking____
　　[A] shows you are interested in and listening to what the speaker is saying
　　[B] shows you want to keep some distance from the speaker
　　[C] makes him think you are thinking about something else
　　[D] makes him believe you are not interested in his talk
　　4. All of the following gestures encourage communication except____
　　[A] leaning forward a little while a person is talking
　　[B] crossing your arms
　　[C] looking in others' eyes
　　[D] extending your hand in greeting
　　5. From the text we know that____
　　[A] communication depends little on verbal language and much on body language[B] gestures always prevent the "sign sender" (mouth)
　　[C] we should pay much attention to body language
　　[D] eye contact is always helpful