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Pressure Cooker(压力锅) Safety When you are cooking with a pressure cooker, you should learn a few common sense(常识) rules:1. Never leave the cooker unwatched when it is in use.2. Add sufficient liquid but never past the recommended fill point. Overfilling the cooker may block the vent pipe(排气孔) and cause the cooker to explode.3. Set the cooking time. Too much time may overcook the food or too much pressure may build up in the cooker. Too little time will lead to undercooked food.4. If you are new to pressure cooking, follow the cooking instructions carefully. Heat and time can either result in a great meal or a ruined one.5. Never try to force a pressure cooker cover open. Allow the cooker to cool or run it under cool water before trying to open the cover.6. Clean the cooker thoroughly after each use. Mild detergent(洗涤剂) and hot water work the best. Do not use stove ash or sand for they may damage the cooker. The gasket(密封圈) is best cleaned in warm soapy water and then dried. Store the gasket in the bottom of the pot. Which of the following operations may be dangerous
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Through history there have been many great explorers. Have you, for example, heard of Mar co Polo, the famous Italian traveller He was one of the first Europeans to travel to China. He arrived in China in the late 13th century. About 200 years later Christopher Columbus sailed from Spain by ship. He was looking for a new way to reach India. However, as you probably know, he did not reach India. He landed in America. Five hundred years after Columbus, in the 1930s, a famous explorer named Richard Byrd was one of the first persons to fly over both the North and the South Poles.Today we continue to explore this world, and are starting to explore other worlds, too. In the late 1950s and the 1960s Russian and American scientists sent many unmanned spacecrafts to the moon. These spacecrafts sent back valuable information about the moon. Then on July 16,1969, the first manned spaceship to the moon left earth. On that day Apollo 11 blasted off with three American astronauts on board. Four days after blast-off, two of the astronauts landed on the moon. They then explored the surface of the moon. About two days after landing on the moon, they started back to earth. They arrived safely back to earth a few days later.Today we are sending unmanned spacecrafts to other planets. In the future we might walk in Mars or Venus the way we did on the moon. We might even travel to other galaxies! Who knows One thing we know for sure is that we will continue to explore this world and other worlds, too. Who sent unmanned spacecrafts to the moon in the 1950s and 1960s
Malls are popular places for Americans to go. Some people spend so much time at malls that they are called "mall rats". Mall rats shop until they drop in the hundreds of stores under one rood.People like malls for many reasons. They feel safe because malls have police stations of private security guards. Parking is usually free, and the weather inside is always fine. The newest malls have beautiful rest areas with waterfalls and large green trees.The largest mall in the United States is the Mall of America in Minnesota. It covers 4.2 mil- lion square feet. It has 350 stores, eight night clubs, and a seven-acre park! There are park- ing spaces for 2,750 cars. About 750,000 people shop there every week.The first indoor mall in the United States was built in 1965 in Edina, Minnesota. People like doing all their shopping in one place. More malls were built around the country. Now, malls are like town centers where people come to do many things, they shop, of course, they also eat in food courts that have food from all over the world. They see movies at theatres. Some people even get their daily exercise by doing the new sport of "mall walking". Others go to malls to meet friends.In some malls, people can see a doctor or a dentist and even attend church. In other words, people can do just about everything in malls. Now residents can actually live in their favorite shopping center. How many cars can be parked in the Mail of America().
Outline：Your essay should be based on the information given below． ①乘飞机旅行有许多长处(方便、快捷、省时、舒适等)。 ②空中旅行也有许多不足之处(机票价格贵，有的旅客不适应空中旅行，常常感到身体不适，甚至有人还担心发生空难)。请你简单阐述上述两个方面。 ③最后请你说明你的看法。
Poor as he was, he cared little about money reward.
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