阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

　　The moon is made of ice－cream．Little green men live in the center of the earth．Nearly everyone tells lies．Only the third statement is true．Or at least that is what Dr．Robert Feldman of the University of Massachusetts says．Dr．Feldman conducted an experiment in which he asked 240 students to talk to each other for minutes．He filmed the conversations and then asked the students to watch themselves to confirm if all that they had said was true．

　　It turned out that nearly all of them had lied at least once．It seems that we not only lie, we do it naturally and without thinking．

　　“It's so easy to lie, ” said Dr．Feldman “We teach our children to be honest, but also to be polite and avoid offending people．Kids get a mixed message and that affects how they behave as adults．”

　　According to Dr．Wendy Gamble of the University of Arizona, kids don't need any instructions in lying．It comes naturally to them．Dr Gamble, a psychologist, has identified four different types of lies that both children and adults tell．The “pro－social” lie is told to help or protect other people．The “self－enhancement” lie is told by someone who wants to look good to other people．The “selfish lie” protects the speaker by harming someone else．And worst of all, the “anti－social” lie is told for the pleasure of getting someone else into trouble．

　　According to Dr．Feldman, men and women lie in different ways as well．“Women are more likely to lie to make the person they are with feel good．Men lie to make themselves look better, ” he says．The husband tells his wife he's due for a promotion at work．“Of course you are, ” she replies．

　　“Honesty is the basis of healthy relationships, ” says Dr．Gamble．“But rather than dismiss all lying as bad, we should reflect that deception is common and often socially acceptable．”

　　Perhaps we already do．In the English language, the word liar is usually only used to describe the person who tells selfish or anti－social lies．The rest are referred to as “white lies” ．These are joke words which show that we can tolerate people who don't tell the truth all the time．If people did not make up stories, there would be no literature, poetry or films．

　　Some psychologists argue that the lies people tell each other help hold society together．They make us feel good about each other and ourselves and encourage tolerance and trust．Just think what the world would be like if everybody said exactly what they thought all the time．

　　Yet there are times when people also need to hear the truth．It would be wrong to say that lying makes the world go round．It's the little green men in the center of the earth who do that．

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　　The moon had gone behind a cloud and there weren’t many stars in the sky．I saw a flame in my neighbour’s 　　1　　 ．I thought he was having a midnight fast food so I went back to my 　　2　　．

　　Soon, there was a 　　3　　 smell in the air and I guessed something was wrong．　　4　　, I jumped out of my bed and went downstairs to find out what was happening．I saw 　　5　　 coming out of my neighbour’s kitchen．Right away, I 　　6　　“Fire! Fire!” But there was no one nearby to 　　7　　 my shouts for help．

　　I rushed into my house, 　　8　　 the Fire Department and went back to my neighbour’s house．I rang the doorbell, hit on the door and 　　9　　 my neighbour’s name but there was no 　　10　　．I managed to 　　11　　 the house and rescued a cat and a rabbit．

　　I tried to throw water through the kitchen window, 　　12　　 it was no use; the fire was too strong．　　13　　, a fire engine arrived and soon the firemen 　　14　　 the fire．They arrived just in time as the fire was going to 　　15　　 to the other rooms in house．

　　When my neighbour came back, he was 　　16　　, because his kitchen was burnt down, but he thanked me for calling the Fire Department and for saving his 　　17　　．He wanted to give me some money in return but I did not 　　18　　 it．

　　Weeks later, my neighbour repaired and rebuilt his kitchen．He 　　19　　 me to his new kitchen and there he gave me a medal that he had 　　20　　 ordered from a factory．It made me very happy．

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