（D）

    Healthy eating doesn't just mean what you eat, but how you eat. Here is some advice on healthy eating.

    Eat with others. It can help you to see others' healthy eating habits . If you usually eat with your parents, you will find that the food you eat is more delicious.

    Listen to your body. Ask yourself if you are really hungry. Have a glass of water to see if you are thirsty—sometimes you are just thirsty, you need no food. Stop eating before you feel full.

    Eat breakfast. Breakfast is the most important meal of the day. After you don't eat for the past ten hours, your body needs food to get you going. You will be smarter after eating breakfast.

    Eat healthy snacks like fruits, yogurt or cheese. We all need snacks sometimes. In fact, it's a good idea to eat two healthy snacks between your three meals This doesn't mean that you can eat  a bag of chips  instead of a meal.

    Don't eat dinner late. With our busy life, we always put off eating dinner until the last minute. Try to eat dinner at least 3 hours before you go to bed. This will give your body a chance to digest most of the food before you rest for the next 8-10 hours.

    In Britain，the government，school leaders，teachers and parents all agree that students should wear uniforms．B____ British private schools have their own school uniforms．They think it's i____ for pupils to wear school uniforms．

    School leaders normally decide if pupils will have to wear a uniform，and they a____ decide what it should look like．You know，no students want to wear65．u____ uniforms．

    Everybody wants to wear beautiful uniforms．

    Leaders have to follows the rules，and they c____ just choose anything they like．They have to t____ of the students' feeling and taste．Here are a few f____ leaders should consider．

    ①Cost．This is the first fact they should consider．Their uniforms shouldn't be too e____ because it may cause problems for some families．Not all the families can afford it．

    ②Sexism（性别歧视）．The uniform policy must be equally fair（公平的）for boys and g____．

    ③Cultrues and races．School rules must a____ pupils from all backgrounds to wear a uniform，for example，allowing Muslim（穆斯林）girls to wear an appropriate dress and Sikh（印度锡克教徒）boys to wear a traditional headdress（头饰）．

已知某两种物质在一定条件下能发生如图所示的反应，则下列说法正确的是（     ）