题目

下列关于Fe(OH)3胶体的叙述中，正确的是（ ） A . 制备Fe(OH)3胶体的化学方程式是FeCl3＋3H2O Fe(OH)3↓＋3HCl B . 在制备Fe(OH)3胶体的实验中，加热煮沸时间越长，越有利于胶体的生成 C . Fe(OH)3胶体微粒能吸附阳离子，从而使Fe(OH)3胶体带有一定电荷 D . Fe(OH)3胶体能够吸附水中悬浮的固体颗粒并沉降，达到净水目的It’s not always easy to eat healthy foods when others seem to eat whatever they want. Follow the tips and know that it will make a difference in your life. What about sweet foods? Everyone likes the taste of sweet foods! Small amounts of sweet foods can be part of a healthy meal plan. Sugary foods include soda, sweetened fruit drinks, honey, and candy. Desserts such as cakes, pies, cookies, and ice cream contain a lot of fat as well as sugar. If you choose to eat any of these sweet foods, just have a small amount at the end of a healthy meal. Have a piece of fruit if you are still hungry. Drink water, sugar-free soda, and sugar-free fruit drinks, if you are thirsty, instead of drinks that are all high in sugars. How much should you eat? Your height, weight, age, whether you are a boy or a girl, and how active you are will affect how much food you need to eat each day to stay at a healthy weight. Everyone is different. Talk to your doctor or diet expert about how much to eat, especially if you need to lose weight. If you take in more food than your body burns, you will gain weight. If you take in less food than your body burns, you will lose weight. Being active and eating smaller amounts of food and fewer sweet or fatty foods can help overweight kids lose weight in a healthy way. You will keep your heart healthy, too. 67.Which of the following desserts is NOT mentioned in the passage?A.Cakes.                     B.Pies.                        C.Cheese.                           D.Cookies. 68.How much we should eat will depend on the following EXCEPT___________. A.our body size                      B.the time we spend taking exerciseC.how old we are             D.the money our family earns69.According to the passage, which of the following statements is TRUE? A.The more food our body burns, the faster we will lose weight. B.The more food we eat, the more food our body will burn. C.The more active we are, the more food we need to eat. D.The more food we eat, the more weight we will gain70.The author advises overweight children to_________. A.eat healthy foods and take regular exerciseB.pay much attention to their heart healthC.keep foods containing sugar and fat awayD.talk to their doctor and join a health club