阅读下列材料：
某革命博物馆珍藏着一本回忆录，泛黄的纸页上记录了那个硝烟滚滚的年代，其中一页写道：有一天战火烧到了鸭绿江边，只为能有宁静的生活，年轻的人们争着奔赴战场……
请回答：
（1）这段话反映的是我国历史上哪一重大事件？
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（2）“奔赴战场”的军队叫什么？司令员是谁？他们被誉为什么？他们当中涌现了哪些著名的英雄人物？
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（3）这场战争的结果如何？结束的标志是什么？
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（1）抗美援朝。
（2）中国人民志愿军；彭德怀；最可爱的人：黄继光、邱少云等。
（3）结果：中朝人民打败了美帝国主义。标志：1953年7月美国被迫在停战协定上签字。
To make our digestive (消化的) system work well, we should avoid doing some things after having a meal, for example, drinking water. It is true that a person should drink 8 glasses of water every day to stay healthy. However, drinking water right after eating or even during a meal may disrupt (扰乱) digestion. It might affect the natural levels of acid and bile (酸和胆汁) that are necessary for proper digestion. What’s more, drinking cold water after eating might slow down digestion. So try to avoid drinking water at least an hour after a meal, and avoid drinking it while eating. Though walking after eating is healthy, doing it immediately after a meal is not. Doing so will make it difficult for the digestive system to take in nutrients (营养) from the food. Besides, the blood will flow towards other parts of the body, like legs, hands, etc., which will make the digestive tract not have enough amount of blood flow that is needed for proper digestion. So we should wait for at least 2 hours after eating, and then begin exercising. Sleeping should also be avoided right after eating. This is because going to bed right after a meal will lead to improper digestion. What’s more, such a habit will also make you put on a lot of weight. Therefore, wait for an hour or two, and then go to sleep. Many of us have the habit of drinking tea just after lunch or dinner, which is really unhealthy. The tea leaves contain a large amount of acid which prevents the protein in the food from digesting. The best time to drink tea is at least one hour after eating. Eating fruits right after a meal may fill the stomach with air and cause discomfort. They will also take time to reach the digestive tract, disturbing the entire process of digestion. To protect your stomach from digestive problems, eat fruits before or after 1-2 hours of a meal. In a word, if you avoid doing all the above things after eating, you will surely make your digestion easy, and you will be less likely to have digestive problems.
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