【单选题】Almost all foods give us energy. Some give us more energy than others. Energy is【B1】in calories. Foods rich in【B2】, starches or sugars have a lot of calories. At【B3】you eat foods that have more energy...
【简答题】阅读理解。 Some doctors think that you should drink a glass of water each morning .You should drink this water first before doing anything else.The temperature of the water should be similar t...