题目内容：

If the eyes are the windows of the heart, then the body is the mirror of our feelings. If we are feeling great, we may give our body signals(信号). If we look at someone else’s body, we can often tell how they are feeling by their body signals. So reading body language signals is a great tool for daily communication.

Someone doesn’t think that learning how to read and use body language is important. In fact, 7% of the information we receive is from what people actually say and 38% of the information we receive is from the tone(语气) and the speed of their voice, while 55% of the information we receive is from their body language.

Facial expression is one of the body languages. Scientists say that humans have 80 muscles(肌肉) on their faces. These muscles can make 7000 different facial expressions. They can be divided into six kinds: happiness, sadness, anger, surprise, fear  and disgust(厌恶).

For example, when people think a certain food tastes disgusting, they usually make a funny face. When people are surprised ,they often raise their eyebrows and open their eyes  wide.

If people can read body language correctly, they may be better at knowing other people’s feelings. However, be careful not to stare at others for a long time because it is not polite.

1.What is a great tool for daily communication?   

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2.Can we receive information form the speed of people’s voice?

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3.How many kinds are there in the facial expressions?

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4.How do people show their surprise through facial expression?

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5.Why shouldn’t people stare at people for a long time?

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