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    It is most difficult for parents to decide whether to have a second child or not.  It is often heard that a single child is likely to be a lonely child. There are no other children in the family for the child to talk to or play with. An only child is not able to get along well with children of his age. Some parents feel sad about making the decisions to have only one child. 

    But the number of parents choosing to have only one child is increasing in many parts of the world. In the US, for example, more than14 percent of women between 18 and 34 plan to have just one child . The same can be seen in the UK. In Japan, the average(平均) number of children born per family had gone down to 1.42 by 1996.  For some single-child parents, especially who are busy working every day, time and energy seem to be overwhelming. They don't have enough time and energy to share with more children. For other people, money is their first consideration. Many couples in Japan choose not to have large families as the cost of supporting a child up to the age of 18 reaches around $160,000.

   Fire can help people in many ways. But it can also be very harmful. Fire can make water hot and house warm, give light and cook food. But fire can burn (燃烧) things, too. It can make trees, houses, animals and other things catch fire (起火). If some people can't run away from fire, it can kill them. This happens in every country every year.
   Sometimes big fire can burn forests. A month ago, a large forest fire broke out in Yunnan Province. It lasted nearly half a month. The forest in Heilongjiang Province and the grassland in Inner Mongolia caught fire in May, 2006. After more than ten days' fight, over 30,000 people and soldiers put out (扑灭) the fire at last.
   Nobody knows clearly when people began to make fire, but there are many interesting stories about the first time a man or a woman started a fire. One story from Australia tells about a man who went to the sun and brought fire down a long time ago. Today people know how to make a fire with matches (火柴). Children sometimes like to play with them. But matches can be very dangerous. The match can burn a piece of paper and then it can burn a house. A small fire can become a big fire, and destroy many things. Fire kills many people every year. So you must be careful with fire.

孟浩然、袁中道表达的思想境界与杜甫、范仲淹有什么不同？