题目

根据下图所示实验情景，回答问题。 （1） 根据A实验的现象，说明燃烧需满足的条件是； （2） B实验的现象是发出淡蓝色火焰、放出热量和； （3） 根据C实验的现象，说明二氧化碳在现实中的应用是。 答案：【1】与氧气接触 【1】烧杯内壁有水雾生成 【1】灭火（或作灭火剂） How do you feel when you get up in the morning? Happy and active or tired and weak? Do you often wake up with a headache(头痛)? Well, if the answer is yes, take Dr. Talbot's advice and start feeling better. ☆ Get up and move. If you hate feeling tired and unhappy, you should start exercising, Try running, swimming or cycling. When we exercise, our body produces special chemicals (化学药品) that give us energy and make us feel happier. If you can't stand exercising, listen to your favorite music and dance to it. That's exercise, too. ☆ Eat healthily. You should eat three balanced (平衡的) meals every day and you shouldn't eat too much fast food. If you need some extra (额外的)  energy the whole day, make an energy drink. Mix (混和) together fresh fruit juice and low-fat milk. It tastes great! ☆ Go out and enjoy nature. The smell of flowers will make you feel happy. Even the smell of your favorite food can change the way you feel! ☆ Wake your body up. When you have a shower, change the temperature of the water----from hot to cold and back to hot again. You'll feel the difference. ☆ Laugh! You should laugh for, at least, three minutes, three times a day. It will make you feel great! Problem: You feel tired and  1.  or wake up with a headache in the morning. Dr. Talbot’s  2.  : 1. Start exercising, your body will produce special chemicals to make you  3.  . 2. Listening to your favourite  4.  and dancing to it is also exercise. 3. Don’t  5.  too much fast food. 4. Drink the mixed fresh fruit juice to get some extra  6.  . 5. Go out and  7. nature, it can change the way you feel. 6. Changing the 8.  of the shower water can wake your body up. 7. Try to  9. for three minutes, three times a day. It will make you  10.  great.