As you know, many big changes happened after Christopher Columbus and other Europeans came to the Americas 500 years ago. Today I’m going to talk about a change in the world diet the way people cooked and ate. Five hundred years ago, there was a big change in the diet of people all over the world. Let’s talk about the diet in Europe 500 years ago. One important food was meat. Europeans ate many kinds of meat, including beef, lamb, goat, and pork. Europeans also ate dairy products milk and cheese made from the milk of cows and goats. The Europeans ate several different grains: Most people ate wheat, and some people ate rice, which came first from Asia. Now, let’s look at the diet in the Americas about 500 years ago. The diet of the native American was quite different from the diet of the Europeans. This is because the European meats, dairy products, and grains didn’t exist in the Americas. However, the native Americans ate some food that didn’t exist
After Man has dreamed about flying for
a long time. Michael Moshier is a dreamer. He invented the Solo Trek. The Solo Trek had a 120 horsepower engine with twin fans. Only one person flies. As you fly above the roofs, you lean a little forward. You can see everything under you. You are flying like Superman. Michael Moshier looked at the jet belt and the rocket belt that was developed 20-30 years ago. Nothing ever came from them. People still can’t fly. Inventors have tried to make it easy for people to fly. Paul Moller has been working on his flying car for 30 years. He now says it is ready for tests. It would take off and land vertically, go 600 miles an hour, and deliver 20 miles to the gallon. A computer would do the actual flying. He says it could be sold next year for about a million dollars. NASA is working wi A. a helicopter B. a solo flying machine C. a flying car D. an airplane 我来回答: 提交
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