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不能打开HTML源码文件的软件为(53)。若在网页中需要增加“提交”和“重置”两个按钮，则应将它们的TYPE属性分别设置为(54)。在HTML的标记中，不需要成对出现的标记为(55)。
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A．4B/5BB．NRZC．曼彻斯特D．差分曼彻斯特
Legend has it that the first English colonists (殖民者) in Massachusetts (马萨诸塞州) started the custom. According to the story, the Pilgrims~ first winter in the New World was difficult. They had arrived too late to grow many crops, and without fresh food, half of the colonists died from disease. The following spring the Indians taught them how to grow corn. In the autumn of 1621, bountiful crops of corn, beans and pumpkins were harvested. The colonists had much to be thankful for, so a feast was planned. They invited their Indian friends to join them in a large feast to share in the bounties (慷慨) of the land. This is the first Thanksgiving.
The traditional foods of the big Thanksgiving Day meal include roast turkey, cranberries, sweet potatoes, pumpkin pie, and Indian bread puddings.
Since the day is set aside for giving thanks, it has also become a traditional family day. Large dinners with many relatives are common throughout America on this special day.
When was the Thanksgiving Day tradition begun？
Trees should only be pruned (修剪) when there is a good reason for doing so. Many gardeners believe that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.
First, pruning may be done to make sure that trees have a desired shape. The object may be to get a tree of the right height, and to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut out diseased or dead wood, or branches that are rubbing against each other and thus causing wounds. A tree may grow healthier by removing the branches that are locking up the centre and so preventing the free movement of air.
One result of pruning is that an open wound is left on the tree and this provides an easy entry (进入) for diseases, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die. Pruning is usually clone in winter, for then you can see the shape of the tree clearly without the interference from the leaves.
According to the article, which of the following statement is NOT true？
Good technique in medicine means less pain and fewer deaths and, ______ it is our duty to
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