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One of the most famous tourist attractions in the State of California is the giant redwood. This redwood might be described as "the tree with the moving foot" because it is not even a native California, believe it or not!These trees, which are among the largest and oldest of all living things, moved to California from the Arctic. Long, long ago they grew in the Arctic, just as enormous and tall as they are today. But the warmer climate drew them southward and it took some seventy-five million years to complete the move.Carried by birds, winds, and some strong-teethed animals, the seeds of the redwood traveled thousands of miles from what is now the northern-most tip of Alaska to California, their last stand.Only the hardest seeds survived—a few that visited Eu- rope soon died out. But those that made it to California put down roots, grew into luxuriant ’forests, and became camera subjects for the hundreds of thousands of tourists who visit California’ s giant redwood each year. Why did the redwood trees begin to move southward（）

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请在“考试项目”菜单上选择“字处理软件使用”菜单项，完成以下内容。 1．在考生文件夹中，存有文档WT9.DOC，其内容如下。 [文档开始] 新能源技术有太阳能技术、生物能技术、潮汐能技术、地热能技术、风能技术、氢能技术和受控热核聚变技术等多种。新能源技术有太阳能技术、生物能技术、潮汐能技术、地热能技术、风能技术、氢能技术和受控热核聚变技术等多种。 [文档结束] 按要求完成下列操作：新建文档WD9.DOC，插入文件WT9.DOC的内容。第一段设置为小四号仿宋GB2312字体，左对齐；第二段设置为四号黑体、加粗、右对齐，存储为文件WD9.DOC。 2．新建文档WD9A.DOC，插入文件WD9.DOC的内容，将第一段文字在第一段之后复制3次。将前两段合并为一段，再将合并的一段分为等宽三栏，栏宽为4.5厘米。存储为文件WDgA.DOC。 3．制作3行4列表格，列宽3厘米，行高26磅。再做如下修改，均分第一列、第二、三行单元格，并存储为文仁 WD9B.DOC。 4．新建文档WD9C.DOC，插入文件WD9B.DOC的内容，表格边框为1.5磅，表内线0.5磅，第一行设置红色底纹，存储为文件WD9C.DOC。

案情：2005年1月1日，甲与乙口头约定，甲承租乙的一套别墅，租期为五年，租金一次付清，交付租金后即可入住。洽谈时，乙告诉甲屋顶有漏水现象。为了尽快与女友丙结婚共同生活，甲对此未置可否，付清租金后与丙入住并办理了结婚登记。入住后不久别墅屋顶果然漏水，甲要求乙进行维修，乙认为在订立合同时已对漏水问题提前作了告知，甲当时并无异议，仍同意承租，故现在乙不应承担维修义务。于是，甲自购了一批瓦片，找到朋友开的丁装修公司免费维修。丁公司派工人更换了漏水的旧瓦片，同时按照甲的意思对别墅进行了较大装修。更换瓦片大约花了10天时间．装修则用了一个月，乙不知情。更换瓦片时，一名工人不慎摔伤，花去医药费数千元。2005年6月，由于新换瓦片质量问题，别墅屋顶出现大面积漏水，造成甲一万余元财产损失。2006年4月，甲遇车祸去世，丙回娘家居住。半年后丙返回别墅，发现戊已占用别墅。原来，2004年12月甲曾向戊借款10万元，并亲笔写了借条，借条中承诺在不能还款时该别墅由戊使用。在戊向乙出示了甲的亲笔承诺后，乙同意戊使用该别墅，将房屋的备用钥匙交付于戊。问题：丙可否行使对别墅的承租使用权理由是什么？

Most paragraphs have a "topic sentence" which expresses the central idea. The remaining sentences in the same paragraph expand or support that idea. It has been estimated that between 60-90% of all expository(阐述，说明) paragraphs in English have the topic sentences placed at the beginning of the paragraphs. Always pay special attention to the first sentence of a paragraph; it is most likely In give you the main idea.Sometimes, though, the first sentence in the paragraph does not have the feel of a main idea" sentence. It does not seem to give us enough information to justify a paragraph. The next most likely place to look for the topic sentence is the last sentence of the paragraph. Take this paragraph for example:"Some students prefer a strict teacher who tells them exactly What to do. Others prefer to be left to work on their own. Still others like a democratic type of class. No one teaching method can be devised to satisfy types of class at the same time."Remember that the opening and closing paragraphs of a passage or chapter are particularly important. The opening paragraph suggests the general direction and context of the piece, while the closing paragraph often summarizes the very essence of what has been said. The closing paragraph often summarizes（）of what has been said.

以下程序运行后的输出结果是【17】。struct NODE{ int k； struct NODE link；};main(){ struct NODE m[5]，p=m，p=m,q=m+4； int i=0； while(p!=q) { p-＞k=++i; p++ q-＞k=i++; q--； } q-＞k=i； for(i=0；i＜5；i++) printf("%d"，m[i].k)； ptintf("\n");}