题目内容
Many people like to make a good impression on other people. This is true when they go to a meeting or go out with their friends. Dressing well is one of the ways of making a good impression.Different countries have different ideas of dressing well. In the United States, people think that it is better to dress simply and suitably. For example, ball-dresses are not suitable for school or for work. They do not wear heavy clothing in summer, nor would it be comfortable.Dressing with too many colors is not a good taste. Simple clothes are easy to find and they can be bought cheaply, too. They are always in good taste.Simple and suitable clothing is worth having for children, too. A little girl does not feel comfortable when she is wearing a party dress and all the other girls in school are wearing plain sweaters (毛线衫) and shirts. A little boy is not happy when he is the only one in his class without a tie. Feeling "different" is never very comfortable for a child.There is an old saying, which reads, "Do in Rome as the Romans do." When you live in the United Slates, you will be happier if you learn lo dress simply and suitably. A school girl in America usually wears ().
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James Cook was born in Britain on October 27, 1728. He commanded (指挥) three voyages of discovery for Great Britain, and sailed around the world twice. Captain Cook’s voyages led to the founding of colonies (殖民地) throughout the Pacific by several European countries. He is considered one of the world’s greatest explorers.Cook was an apprentice (学徒) to a shipping company at age 18, and joined the British Navy at 27 in 1755. In 1768, the Navy appointed him leader of a scientific expedition (远征) to Tahiti to observe a solar eclipse (日食) by Venus. He also had secret orders to look for a southern continent geographer (地理学者) who worked on the research on the world. He set out on his first voyage round the world in the ship voyage. The trip to Tahiti was successful. In October 1769 Cook was the first European to visit New Zealand.On Cook’s second journey he sailed farther south than any other European. He circled Antarctica in his famous ship Resolution, but the ice surrounding the continent prevented the sighting of land. The existence of the Antarctica remained unproved until 1840. He returned to England in 1775 and was promoted (提升) to Captain. James Cook ().
When you enter a supermarket, you see shelves full of food. You walk between the shelves. You carry a shopping basket and put your food in it.You probably hear soft, slow music as you walk between the shelves. If you hear fast music, you walk quickly. The supermarket plays slow music. You walk slowly and have more time to buy things.Maybe you go to the meat department first. There is some meat on sale, and you want to find it. The manager of the supermarket knows where the customers enter the meat department. The cheap meat is at the other end of the meat department, away front where the customers enter. You have to walk by all the expensive meat before you find the cheaper meat. Maybe you will buy some of the expensive meat instead of: the meat on sale.Tile department selling milk and milk products such as butter and milk powder is called the dairy department. Many customers like milk that has only a little butterfat(牛奶中的脂肪) in it. One store has three different jars of low fat milk. One says "1 percent fat" on the jar. The second says "99 percent fat free". The third says "LOW FAT" in big letters and "1%" in small letters. As you can see, the milk is all the same. However, in this store the three jars of milk cost three different amount of money. Maybe the customers will buy the milk that costs him most.Most of the food in supermarket is very pleasing. It all says "Buy me !" to the customers. The expensive meat says "Buy me!" as you walk by. The expensive milk jar says "Buy me! 1 have less fat.\ The best title of the passage may be ().
Cancer develops over a long time, which means that you have years——typically decades——in which to hinder or promote it. Researchers are finding that what you eat may interfere with cancer growth at various stages. For example, certain foods can block the chemicals that initate cancer. Antioxidants(抗氧化剂), found in some vitamins and minerals, can snuff out oxygen free radicls (氧自由基), substances that are thought to make cells more susceptible to cancer, and they can even repair some of the cellular damage that has been done. And some food—wheat bran(麦,糠) in particular—has been shown to shrink precancerous(癌症前期的) cells.A recent review of 17 studies from 17 nations reveals that people who eat the most fruits and vegetables have about half the cancer raters of those who eat the least. In fact, some research suggests that frequent consumption of fruits and vegetables can cut the risk of lung cancer even in smokers.One of the most studied antioxidants in vegetables and fruits thought to protect against cancer is beta-carotene(β胡萝卜素), concentrated in deep green, yellow and orange vegetables such as carrots, sweet potatoes and spinach.Research also shows that beta-carotene can change in the body to retinoic acid (维生素A酸), a substance used in clinical trials to treat certain cancers.Here are some of the foods that contain cancer-fighting chemicals.Tomatoes. One of the compounds in tomatoes that is thought to reduce the risk of cancer is lycopene(蕃茄素), the pigment (色素) that makes tomatoes red. Lycopene, an antioxidant that is also found in watermelons and apricots, quenches certain cancer-triggering oxygen free fadicals. Healthy people with the most blood lycopene.Green Vegetables. A recent Italian study showed that dark-green leafy vegetables lower the risk of many cancer. Spinach, broccoli, kale and dark-green lettuces are chock-full of antioxidants, including beta-carotene, folate(叶酸) and lutein(叶黄素).A good rule of thumb(单凭经验的做法) : the darker the vegetable, the more antioxidants within.Pungent preventives(刺激性的预防物). A whole host of chemicals thought to have cancer-inhibiting properties have been identified in allium vegetables, which include garlic, onions and scallions(大葱). Animal studies show that many of these chemicals block carcinogens that have been linked to colon, stomach, lung and liver cancer. A study at Pennsylvania State University found that feeding rats various garlic extracts and preparations(配制好的食物) reduced mammary tumors by as much as 71 percent. In humans, studies suggest that those who eat more onions and garlic are less prone to gastrointestinal cancer.Research suggests that garlic compounds may even interfere with cancer progression. A recent German study found that ajoene, a garlic compound, is toxic to malignant cells. Garlic may also antagonize existing cancer by boosting(促进) immune functions, according to researchers at Loma Linda University School of Medicine. Their study, done on mice, found that garlic’s sulfur compounds increased the activity of macrophages and T-lymphocytes(淋巴细胞), two of the components of the immune system that destroy tumor ceils. Recent research indicated that what people eat may help to significantly reduce their risk of developing cancer.（）
When you enter a supermarket, you see shelves full of food. You walk between the shelves. You carry a shopping basket and put your food in it.You probably hear soft, slow music as you walk between the shelves. If you hear fast music, you walk quickly. The supermarket plays slow music. You walk slowly and have more time to buy things.Maybe you go to the meat department first. There is some meat on sale, and you want to find it. The manager of the supermarket knows where the customers enter the meat department. The cheap meat is at the other end of the meat department, away front where the customers enter. You have to walk by all the expensive meat before you find the cheaper meat. Maybe you will buy some of the expensive meat instead of: the meat on sale.Tile department selling milk and milk products such as butter and milk powder is called the dairy department. Many customers like milk that has only a little butterfat(牛奶中的脂肪) in it. One store has three different jars of low fat milk. One says "1 percent fat" on the jar. The second says "99 percent fat free". The third says "LOW FAT" in big letters and "1%" in small letters. As you can see, the milk is all the same. However, in this store the three jars of milk cost three different amount of money. Maybe the customers will buy the milk that costs him most.Most of the food in supermarket is very pleasing. It all says "Buy me !" to the customers. The expensive meat says "Buy me!" as you walk by. The expensive milk jar says "Buy me! 1 have less fat.\ Three different jars of low fat milk ().
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