You’re sitting on the train home and the person opposite you yawns(打哈欠).Suddenly,you’re yawning with him,though you’re not tired.

　　This phenomenon confused scientists for years until a recent study found that people tend to sympathize with fellow humans.Supporting this claim was the discovery that those children who were unable to form normal emotional ties with others did not experience contagious(有感染力的) yawning,which showed that humans communicate regularly without words.

　　Hugo Critchley,a neuroscientist,has conducted an experiment recently,www.100ksw.comple,there’s the obvious tendency to smile when smiled at and there are less obvious changes that reflect emotions of surprise,anger or sadness such as a change in our heart rate and blood pressure.”

　　Hugo Critchley further explained,“Our bodies synchronise and www.100ksw.comotions.”

　　So,what lessons can we learn from this?“Spend time with happy people—otherwise your health could suffer,”said Critchley.“When we’re sad,our body goes into fight or flight mode.But when we’re happy,our body works normally and we feel relaxed and positive.So we look bright,our skin glows,we feel healthy and it affects everyone around us.”

　　1.According to Hugo Critchley, .

　　A.emotions are as visible as facial expressions

　　B.we yawn more frequently when we have a cold

　　C.emotions are connected with states of internal responses

　　D.the change of blood pressure is not linked with the change of emotions

　　2.The underlined word“synchronise”in Paragraph 4 means “ ”.

　　A.move slowly B.change rapidly

　　C.relax temporarily D.respond accordingly

　　3.From the passage we can learn .

　　A.sadness is as contagious as happiness

　　B.anger is less contagious than friendliness

　　C.surprise is more contagious than smile

　　D.surprise is the most contagious among emotions

　　4.Which of the following statements is TRUE according to the passage?

　　A.Emotions have delicate influence on fellow humans.

　　B.Children like copying the actions of fellow humans.

　　C.Scientists are still confused about contagious yawning.

　　D.People tend to communicate more with body language.

　　答案 .C .D .B .A