为什么微波炉加热这么快？Microwave ovens (烤箱) don’t use regular (普通的) heat. They use microwaves. These waves of energy (能量) heat water. Most food has water in it. The microwave cooks the water inside food ……

为什么微波炉热食物这么快？Microwave ovens (微波炉) don’t use regular (普通的) heat. They use microwaves. These waves of energy (能量) heat water. Most food has water in it. The microwave cooks the water inside food ……

为什么微波炉加热食物很快？Microwave ovens don’t use regular heat (普通的加热方式). They use waves of energy (能量波). Most food has water in it. The microwave heats the water inside food. ……

with a cup or glass. How is this so? The answer is: great inventions for food. What are the most... BC. Frying is the fastest way to cook. It saves a lot of time for people.Baking 烘焙Do you know how ……

in the microwave oven (微波炉). But do you know how your grandparents made breakfast in their days? To remind people... out five for you. How would you live your life without them?RefrigerationPreserving (保存) food has ……

-Aid.Microwave ovenNowadays, microwave ovens are popular around the world. But at the beginning...意外发明加速生活的步伐LOOK at the common things around you: Post-it notes (便利贴), jeans, a microwave oven ……

was our most important tool. It brought food from the field to the plate.Baking 烘焙Do you know how to make... with microwaves. In 1947, the first microwave oven went on sale.Refrigeration 冷藏How did people keep food ……

2, _____.1. According to Paragraph 2, _____.A. poor people are affected more by the heat A. poor people are affected more by the heat B. air conditioners can solve the problem completelyB ……

练习时间练习时间How many people can Earth support? page 3How many people can Earth support? page...) human health  c. improving (改善) human health 3. What do countries and scientists do ……

. There are only 2 microwave ovens in our school, but about 120 students use them and our time for dinner is only 30 minutes. So when the bell rings, a “fight” for microwave ovens begins. Students ……

) considers any SAR below 1.6 W/kg to be safe because it's not enough to really heat up tissue... surrounds any appliance that uses a lot of power, including ovens, electric blankets and hair dryers.So ……

of milk we now drink. Pasteurized milk saves more nutrition.Refrigeration Do you know how people kept food... started to work out how to cook food with microwaves. In 1947, the first microwave oven went on sale ……

put fridges with food outside?1. Why do people put fridges with food outside?1. Why do people put fridges with food outside?1. Why do people put fridges with food outside?A. To keep the food fresh ……

and ate it. "Tasty," he said. "Microwave ovens are very good."The Japanese people there said Deng... a visit while I was in Shanghai.3. heat v. 加热用法：heat 还可做名词。heater n. 暖气You have to heat it up before ……

ovenNowadays, microwave ovens are popular around the world. But in the beginning, people invented...) that microwaves could cook food. In 1947, the first microwave oven in the world came into being.学语 ……