题型:阅读理解 阅读理解。 Do you know how to keep healthy? If not, never mind. Look at the following table and you will have a good idea.Food Amount Calories (卡路里)Vitamins (维他命)FoodAmountCaloriesVitaminsOrange juice1 glass50cCoke1 can (听)90-Green tea1 cup0EMilk (牛奶)1 glass150A, B, DMangoes (芒果)1102E, B, CApples165B, C, EBananas1100BTomatoes1 (large)30A, CPork (猪肉)100g166A, DFish100g93A, D, EChicken100g180A, DBeef100g390B12, B61. How many calories does a can of Coke have? ______________________________________________________________2. Tom needs vitamin E. What should he drink according to the table? ______________________________________________________________ 3. What vitamin do mangoes, apples and bananas have in common (共有的)? ______________________________________________________________ 4. What should a sick man have if he needs vitamin A and vitamin D? ______________________________________________________________ 5. What has the most calories? ______________________________________________________________ 查看答案
题型:选择题 晴朗得夏日中午,往树或花得叶子上浇水,常会把叶子烧焦,其原因是( )A.水滴蒸发,带走叶子上的热B.水滴在阳光下温度升高,把叶子烫焦C.水滴容易透过阳光D.水滴会使阳光会聚,把叶子烧焦 查看答案
题型:判断题 在高压电力系统内一般使用阀型避雷器、保护间隙和排气式避雷器作为防雷保护。应依据被保护对象、系统接地方式、电压等级等因素选择使用。详见第一章第五节。BB0kV及以下有效接地系统宜采用金属氧化物避雷器。 查看答案