^{A detective is a policeman but he does not wear a uniform. He works in his ordinary clothes. If he wears a uniform, robbers will kriow that he is a policeman, Then they will avoid him.
To detect means 'to find out'. A detective finds out who does bad things. He can sit in a coffee-shop with other customers. He can listen to people talking. Some thieves may want to rob a shop. if they talk a detective may hear them. Then policemen will hide in the shop. When the thieves come, the policemen will catch them. A detective can go to a football match. He can watch for pickpockets and catch them: Pickpockets are people who steal things from people's pockets. A detective must be clever, honest and brave.He works hard and helps to protect us.}

It is easy to make a delicious -looking hamburger at home. But would this hamburger still look delicious after it sat on your kitchen table under very this hamburger after the seventh hour, would anyone want to eat it? More importantly . do you think you could get millions of people to pay money for this hamburger? These are the questions that fast food companies worry about when they produce commercials or print ads for their products, Video, and photo shoots often last many hours. The lights that the photographers use can be extremely hot. These conditions can cause the food to look quite unap'pealing to potential consumers Because of bright lights for six or seven hours? If someone took a picture or made a video of this, the menu items that you see in fast food commercials are probably not actually edible, Let's use the hamburger as an example  is the but The food stylist -a person employed  by the company to make sure the products look perfect  sorts through hundreds of buns until he or she finds one with no wrinkles. Next, the stylist carefully rearranges the sesame seeds on the bun using glue and tweezers for maximum visual appeal The bun is then sprayed with a waterproofing solution so that it will not get soggy from contact with other ingredients, the lights or the humidity in the room. Next, the food stylist shapes a meat patty into a perfect circle. The only the outside of the meat gets cooked ___ the inside is left raw so that the meat remains moist . The food stylist then paints the outside of the meat patty with a mixture of oil, molasses, and brown food coloring Grill marks are either painted on or seared into the meat using hot metal skewers. Finally, the food stylist searches through dozens of tomatoes and heads o lettuce to find the best -looking produce .One leaf of the crispest lettuce and one center slice of the reddest tomato are selected and then sprayed with glycerin to keep them looking fresh. So,the next time you see a delectable hamburger in a  fast food commercial, remember you're actually looking at glue, paint, raw meat, and glycerin! Are you still hungry? 

In 1920 after some thirty -nine years of problems with disease, high costs, and politics, the Panama Canal was officially opened, finally linking the Atlantic and Pacific Oceans by allowing ships to pass through the fifty-mile around Cape Horn. It takes a ship approximately eight houses to complete the trip through the canal and costs an average of fifteen thousand dollars, one truth of what it would cost an average ship to round the Horn.  More than fifteen thousand ships pass through its locks each year. The French initiated the project but sold their rights to the United States, which actually began the construction of the project. The later will control it until the end of the twentieth century when Panama lakes over its duties.