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teachers should adjust the management of the subjects and arrange the time with , the students of our school are clever, but their capacity of abiding discipline is we should “enforce” them to learn carefully at first in order to lose my hands to make them learn short, I will make my efforts to teach the students based on my experiences and learn from the teachers to enhance myself.第三篇:英語演講稿關(guān)于飲食[范文模版]I shall be speaking today aboutBefore we start our presentation, let39。s take a brief look atIf you give a diet to laboratory animalit’s very mon for animals to gain a good bit of weight when given access to this if they’re given healthy food at the same time, they’ll tend to ignore the healthy food and eat a diet like there are two properties of this diet that help promote overeating and obesity in laboratory would you say the two features are?Sugar and is what people usually guess first and that’s correct, fat is number two, so you guys are good so can guess what the third might be? Salt is a good guess, but that’s not the why would a lab animal seek out a diet, bee very overweight, bee nutritionally deficient in some things because it’s not eating the healthy foods to the extent that it bees unhealthy? The fact is those lab animals have a hardwired preference for foods that are high in fat and high in sugar, primarily because of the energy density that those foods bring to one, the seeking out fat and sugar is a highly evolved, adaptive evolutionary trait of animals and we’re going to talk the two big ones that people are usually concerned with: carbohydrates and ’s start with , in other ’re used by the body for pretty immediate are three classes of sugar: monosaccharides, disaccharides, and ’s not so important that you know which sugars fall under each of these categories, but it is important to know that there are different categories of the monosaccharides, glucose, fructose and galactose are the , where you have several sugars paired together, are maltose, sucrose, and the polysaccharides are the plex carbohydrates, and that’s starch, glycogen, and you look at sources of these different carbohydrates, the glucose es from ’s not the only place but that’s a primary source of see the lactose of course from milk, and then you get down to the celluloseand starches,cereals and vegetables bee the primary source of we eating too much or too little of these different classes of sugars? Well, as you might guess, we eat too much of the simp