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Câu trả lời:

Theo các nhà nghiên cứu, những người không muốn ngủ có nguy cơ mắc bệnh đau tim gấp đôi nguy cơ đau tim bình thường . Các nhà khoa học cho biết thức giấc thường xuyên vào ban đêm được xem như một lời cảnh báo về sức khoẻ không lành mạnh trong tương lai. Nghiên cứu gần đấy cho thấy rằng 13.000 người là những người phải vật lộn để ngủ vào ban đêm là 99% có nguy cơ bị đau tim hoặc đau thắt ngực nghiêm trọng. Những người mất hơn nửa giờ để ngủ hoặc ngủ ít hơn sáu giờ đồng hồ cũng có nguy cơ gia tăng bệnh . Nghiên cứu của Nhật Bản đã không xác định được lý do tại sao lại có một mối liên hệ mạnh mẽ giữa giấc ngủ và sức khoẻ của trái tim. Nhưng các nhà khoa học cho biết, hành động thức tỉnh liên tục có thể gây ra tình trạng "kích hoạt quá mức" trong hệ thần kinh, làm tăng nhịp tim và huyết áp, gây thêm căng thẳng lên tim. Ngủ kém cũng có thể là triệu chứng của tình trạng sức khoẻ kém, có nghĩa là những người có vấn đề về tim ít có khả năng ngủ ngon giấc. Cuộc nghiên cứu cho thấy những người phải mất hơn nửa giờ để ngủ có nguy cơ đau tim tăng 52% và 48% nguy cơ cơ thể bị đột quỵ tăng cao. Và những người có ít hơn sáu giờ để ngủ một đêm là 24 % nhiều khả năng bị đau tim.

Câu trả lời:

Some people say that they like living in the country, the others like living in the city. In my point of view, I prefer living in the countryside for a number of benefits. First of all , It is a quiet and peaceful place. There are a lot of plant species so the air and the food are fresh and clean. We can enjoy a healthy natural condition without worrying much about environmental pollution. We are free to admire the breathtaking landscapes such as huge meadows, peaceful hills or forests. We can also enjoy walking in the forest and picking mushrooms or hunting. Second, There aren't any huge blocks of flats, modern skyscrapers and bothersome traffic jams in the countryside so the air is not polluted. There is no water pollution, either. Moreover, living in the countryside is cheaper than it is in the city, so you can buy many hings at lower prices. The other positive side is the safety. In the rural area the crime rate is much lower. There aren't a lot of housebreaks of burglary and robbery. In the countryside people usually and keep eyes on neighbour's estates. They always react when something strange is happening. Finally, most of the villagers are friendly and hospitable. They are always willing to help each other. Moreover, people in the cities are very susceptible to stress because of pollution, the pressure of work, competitions, etc. In summary, Living in the countryside has many advantages because of fresh air, clean food, specially the people’s friendliness and hospitality.

Câu trả lời:

Dear John ,

Everyone has their own memories, maybe it's very happy memories but it can also be sad memories and so do I . I have a memorable childhood which has many experiences. One of the experiences I remember most is the first time I was invited to a birthday party. I was a 6-year-old girl and I had a bestfriend whose name is Lisa. We were very close and seemed we couldn’t live without each other until her birhtday. It was a beautiful morning when Lisa invited me to her birthday party and had no idea about how great her party would be if she didn’t ask me to attend. I was very happy and decided to make my bestfriend surprise by giving her a puppy as a present. Lisa didn’t like dog or any animal but I almost forgot about that. I was confident to give her my present in her birthday and immediately realized that she didn’t like my little dog which I myself chose to buy 3 days ago. While the party was going on, I stood in a corner of the room and watched how much she loved other normal presents such as teddy bear, dolls or crayons. I felt dissapointed but that was not the worst thing. About 20 mintues later, Lisa’s father gave a sign that was the time to taking out a birthday cake. It was the biggest birthday cake I had ever seen. The light went off. As soon as it went on, somebody screamed “It’s a puppy in the cake”. Everyone was surprise and they recognized that was my puppy. They looked at the puppy and then looked at me. I glanced to Lisa. She said nothing and about to cried. I was very confused and ashamed. I carried my puppy, said sorry to Lisa and ran out of the party. I couldn’t believe that I had just broken my bestfriend’s birthday cake because of a silly decision. I learned that never bring any animal with me to a party, especially bestfriend’s birthday party. It’s an experience that I won’t forget for the rest of my life. Luckily Lisa forgave me and we are still friend up to now. She always reminded me about her 6th birthday and we laughed a lot. Do you have a a memorable childhood , too . Write soon for me about it .

Your friend ,

Wind