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　　Do you see many signs around you?Do you know the signs are an important part of our daily life?They can be in pictures or in words to give people information．What do people think are good signs?If you are thinking about making signs for others, what should you know?

　　The most important thing is that signs should be simple and easy to understand．It is important to use clear language．On the other hand, the words should be easy to write and you just need to write down what you want to do．“Keep off the grass” is a very good example．It means “Don’t touch or walk on the grass”．

　　Nowadays, there is a saying that “A picture paints a thousand words”．Perhaps that’s why we are seeing more and more signs in pictures, or a combination of pictures and words．However, that’s the difficult part, because picture signs may have different meanings in different countries．

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　　In some science fiction movies, the robots are just like humans．They help with the housework and do the most 　　1　　 jobs．

　　Some scientists believe that there will be such robots in the future．　　2　　, they agree it may 　　3　　 hundreds of years．Scientists are now trying to make robots 　　4　　 people and do the same things as us．

　　But robot scientist James White 　　5　　．He thinks that it will be 　　6　　 for a robot to do the same things as a person．　　7　　, it's easy for a child to wake up and know where they are．Mr．White thinks that robots won't be able to do this．But other scientists disagree．They think that robots will be able to talk to people 　　8　　 25 to 50 years．

　　Robot scientists are not just trying to make robots look like people．For example, there are already robots 　　9　　 in factories．They do simple jobs over and over again．People would not like to do such jobs and would get bored．But robots will 　　10　　 get bored．

　　In the future, there will be more robots everywhere, and humans will have 　　11　　 work to do．New robots will have many different 　　12　　．Some will look like humans, and 　　13　　 might look like snakes．After an earthquake(地震), a snake robot could help look for people under buildings．That may not seem possible now, but computers, space rockets and even electric toothbrushes 　　14　　 impossible a hundred years ago．We never know 　　15　　 will happen in the future!

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　　Many people like to read the Guinness Book of World Records(吉尼斯世界紀錄大全), and some people want to 　　1　　 in it!　　2　　 do people get their 　　3　　 in the book?They do something 　　4　　 and 　　5　　, such as making the world’s largest cake with more than 54,000 eggs．

　　For many people, it is fun to make 　　6　　 records．It is exciting．But who eats the 　　7　　?

　　While some people are making world records, 　　8　　 do not have much food 　　9　　．Hunger(饑餓)is a very serious problem(嚴重的問題)in many places．How many 　　10　　 people do not have enough money to buy good food?How many children go to bed without dinner?The answer is“Too many．”

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