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Tham khảo tài liệu 'anh ngữ sơ cấp - học tiếng anh bằng hình ành (phần 3) part 5', tài liệu phổ thông, tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | How do we know whether a man is telling the truth If a man tells another that he win give him three bags of grain for one sheep the other win know whether he told the truth when be gets the grain or doesn t The man may or may not have meant to give the grain when he said he would. He may not have meant to say anything but the truth. But if he did not give the grain later he was not true to his word. We sometimes know whether a man is telling the truth and win be true to his word by the look in his eye or the sound of his voice. truth things which ora true. A aon tails tba truth whan what ba soys Is Irua. 448 In early times before men invented money they did all thek business by exchange of goods. Men traded with other men by exchanging goods they were willing to give up for goods they wanted more. Exchange erf things still goes cm in some parts of the world today. After the invention of money trade increased. It is man s experience that money can be a great help in making trade easier and in keeping business in better order. If you want something and have the money for it you can buy it. You do not have to keep asking yoursetf whether you have something which the other man will be willing to take in exchange for what you want exchange giving one thing for another. willing if you are willing to do something you will do It if you have to. Still up to the present time. trade exchange of things for other things or money. will trade will Invent trade s traded invent s Invented 449 Early man did things with his hands which we do with instruments or by machine. Fingers were made before forks. Among their early uses fingers made good counters. We still use the number ten as the key to our number system because we have ten fingers. .
