We usually go to see a doctor when we are ill． Doctors may give us some medicine， and the medicine often makes us feel better．

But sometimes the doctor's medicine doesn't work． This happened to one man， Thomas Smith． He was ill in hospital， but he wasn't getting well． Then he found a new "doctor"inside himself． He saw funny films． He read funny books． And something wonderful happened．Laughing took away his pain after half a year． He could have a good night's rest． His own happy feeling helped him get well again． He wrote his story in his book． He said laughing was very useful． Itwas the best"medicine"．

Another man， Simon Beck， was also ill， and he had a serious pain in his back． The doctor couldn't stop it， so the man began to "picture"his pain． In his head he "drew a picture of a dog．He imagined it to be a real dog． And it was hurting him． Then the man talked softly to the dog． He put his hand on the dogs head and made friends with it． One year later， his pain went away!

These stories may surprise you， but more and more people are getting well in this way． So call on the"doctor"inside your mind， and keep happy and well!

（1）Where was Thomas smith's new "doctor"？（根据短文内容回答问题） 　　

（2）What did Simon Beck begin to do when the doctor couldn't stop his pain？（根据短文内容回答问题） 　　

（3）Who spent less time taking away the pain， Thomas Smith or Simon Beck？（根据短文内容回答问题） 　　

（4）In the passage the underlined word"It"refers to（a） 　　．

（5）The topic sentence主题句） in this passage is" 　　"．