题目内容
二、统计表根据以下资料，回答问题。根据以下资料，回答91-95题。中国总人口，劳动年龄人口、老年人口及抚养系数变动趋势年份总人口(万人)劳动年龄人口15～59岁(万人)劳动年龄人口比重(%)老年人口(60岁以上)比重(%) 抚养比(%)年龄中位数(岁)20051334018849366.347.5350.7532.3520101386199176466.208.0651.0634.0620151437819332164.919.2454.0735.1420201482559462363.8211.3356.6836.3120301544509079058.7815.1970.1239.3920401571508931656.8419.8875.9541.0320501569338645955.0920.3481.5141.3720601547318474854.7721.5282.5841.8920701534858370554.5422.1583.3642.2620801517858177653.8822.6885.6142.4420901505518067153.5823.4886.6242.9321001494977929753.0423.8988.5343.18 2010年我国60岁以上老年人口的数量约为( )。
查看答案
搜索结果不匹配？点我反馈
更多问题
所给出的图、表或一段文字均有5个问题要你回答。你应根据资料提供的信息进行分析、比较、计算和判断处理。一、文字资料根据以下资料，回答问题。据初步统计，2008年我国全年水资源总量25567亿立方米，比上年减少8.9%，比常年减少7.7%；人均水资源量1945立方米，比上年减少9.3%；全年平均降水量615.5毫米，较上年减少4.5%，比常年减少4.2%。年末全国465座大型水库蓄水总量2109亿立方米，比年初减少128亿立方米。 全年总供水量5716亿立方米，其中地表水源占81.4%，地下水源占18.2%，其它水源占0.4%。全年总用水量5716亿立方米，比上年增加83亿立方米，其中，居民生活用水472亿立方米，生产用水5150亿立方米，生态与环境用水94亿立方米。与上年比较，生活用水增加2.2%，生产用水增加1.4%，生态与环境用水增加1.0%。在生产用水中，第一产业用水3720亿立方米，第二产业用水1335亿立方米，第三产业用水95亿立方米。全国人均用水量为435立方米，比上年略有增长。万元GDP(当年价)用水量273立方米，按可比价计算比上年减少8.3%；万元工业增加值(当年价)用水量144立方米，按可比价计算比上年减少9.8%。 2008年初我国每座大型水库的平均蓄水量约为( )立方米。
头针的针刺深度应该是针尖达到
《素问•脉要精微论》称头为
A Roof over Our Heads Man has three basic needs: food, clothing, and shelter. If a man lives in a warm climate, clothing is not absolutely necessary. However, man cannot live without food, and, he has little chance of survival without shelter. Mankind needs shelter to protect him from the weather, wild animals, insects, and his enemies. Long before man learned how to build houses, he looked for natural shelters, as the animals did. He found that he could protect himself by climbing up into trees or by crouching under the over-hanging edges of cliffs, or by crawling into caves. The first shelters or homes actually built by man were very simple. For his building materials, he used what he could find easily around him: rocks, tree branches, dried grasses, animal skins. It was a long time, however, before man began to build permanent shelters because, until man learned to farm, he lived by hunting. And, in order to follow game, he had to be able to move from one hunting ground to another. Thus, the first man-made shelters were those that could be easily transported. The first permanent shelters were probably built twenty to forty thousand years ago by fish eating people who lived in one place as long as the fish supply lasted. Fish-eaters could stay in one place for several years. However, once man learned to farm, he could live longer in one place. Thus, he was able to build a permanent home. Once again, he built his home with the materials he found at hand. In Egypt, for example, wood was scarce, so most houses were built of bricks made of dried mud, with a roof supported by palm tree minks. When the Norsemen came from Scandinavia to northern Europe, they found many forests, so they built homes with a framework of heavy tree thinks and they filled the space between the trunks with clay. The Eskimos, on the other hand, lived in a land where there was little or no wood. They learned to adapt their homes perfectly to their surroundings. In the winter time, when everything was covered with snow and ice, the Eskimos built their homes with blocks of ice. When the warm weather came and melted the ice, the Eskimos lived in a tent made of animal skins. The weather is man’s worst natural enemy. He has to protect himself from extremes of heat and cold and from storms, wind and rain. Where the weather is hot and dry, the house is generally made of clay brick. The windows are small and high up, so that the heat stays outside. There is often a flat roof, where people can find a cool place to sleep. In hot, humid areas, on the other hand, people need to be protected from the rain, as well as the heat. In such places, houses are built with wide, overhanging roofs, balconies or verandas (走廊). Where there are torrential rains, houses are either built on piles to keep them off the ground, or they have steep thatched (草屋顶的) roofs to drain off the rain. People living in the Congo River region have found that steep, heavily-thatched roofs drain off the jungle rains more quickly. Other people in Africa have found that a roof of broad leaves sheds rain quickly. In Borneo, houses are built on high posts to protect people from dampness. And there are tribes in Malaya who build their homes in the forked branches of trees, and climb up to their houses on bamboo ladders. In northern countries, people build houses to protect themselves from cold and snow. Their houses are built of sturdy materials, and the roofs are steep, so that the snow will slide off. There are also overhanging eaves (屋檐) to keep the snow from piling up next to the house. And, in northern Siberia, where snowfall is extremely heavy, the roofs even have a funnel-shaped (漏半状的) platform to protect the chimneys from drifting snow. Protection from danger has also influenced the type of house man builds. When enemies threatened him, man made his house as inaccessible as possible. The tree-dwellers of the Philippines protect themselves by living high above the ground. When danger threatens, they remove the ladders leading to their homes. The cliff dwellers of the American Southwest built their homes high up on the sides of cliffs, where access was very difficult. Nomad (游牧的) tribes must move from place to place, taking care of flocks of sheep that are always in need of fresh grass. Their houses must be simple and easy to transport. The nomads of central Asia have developed a house made of a framework of poles covered with felt (毛毡). The house is round because the framework is curved. The poles are fastened together at the top with a wooden ring, and there is a hole at the top to let the smoke out. In Europe there are very few wooden houses being built today. This is partly because wood is no longer as plentiful as it once was, and partly because wooden houses are quite inflammable (易燃的). On the other hand, there are many wooden houses in America. This is because the first settlers wanted to build houses quickly and inexpensively. Since the country was covered in many places with forests, some trees had to be cut down to make room for houses. Houses in many cities used to be made of wood. However, since the houses were very close together, fire could easily spread from one house to another. There were disastrous fires in some cities, such as the great fire of London in 1666. When the burned-out cities were rebuilt, wood was still used for the frames and the roofs, but stones or bricks were used for walls. There are so many people living in some cities that it is often very difficult to find a place to live, and if one does find a place it is often too small. And many of the houses are too old and uncomfortable. Just as in prehistoric times, finding a good place to live continues to be one of man’s most urgent problems. Where do the Eskimos live in winter
微信支付 
支付宝支付