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应用C语言输入输出相关知识完成如下任务,巩固课上学习内容（1）用if…else完成考试结果判断，如果成绩大于等于60分，显示“恭喜，通过！”，否则，显示“未通过，继续努力！”。//代码截图注意带本地的目录//运行结果截图（2）用if…else if …else…完成春、夏、秋、冬判断，如果月份为 3，4，5月显示结果为“春天”，如果月份为6，7，8月，显示结果为“夏天”，如果月份微9，10，11月，显示结果为“秋天”，如果月份为12，1，2月，显示结果为“冬天”。//代码截图注意带本地的目录//运行结果截图（3）用switch语句完成如下功能，根据输入的成绩（整数），判断并输出相应的等级。输入成绩与输出结果的对应关系：90-100：优秀 80-89：良好 70-79分中等 60-69分及格 0-59分不及格，其它值：输入有误//代码截图注意带本地的目录//运行结果截图项目要求：以个人形式开发，提交一份word文件。文件名称要求：文件名称：以班级_学号前两位_姓名_选择结构大作业.docx

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过年时节，中国人喜欢在案几之上摆放水仙，因为它象征：

A. 无意义
B. 象征思念，代表团圆
C. 百年好合
D. 蒸蒸日上

中国的植树节由凌道扬和韩安、裴义理等林学家于1915年倡议设立，最初将时间确定在每年。1928年，国民政府为纪念孙中山逝世三周年将植树节改为3月12日。新中国成立后的1979年，在邓小平提议下，第五届全国人大常委会第六次会议决定每年为我国的植树节。

“菖蒲做剑，斩八节（方）之妖魔；艾叶为旗，招四时之吉庆”引自清朝范寅的《越谚》。

A. 对
B. 错

6.Fill in the blanks by selecting suitable words from the word bank. You may not use any of the words more than once.World War II was a global war that was under way in 1939, and ended in 1945. It involved a vast majority of the world’s nations, including all of the great powers, eventually forming two opposing military alliances: the Allies and the Axis. It was the most 1) ___ and widespread war in human history, with 2) _ people serving in military units. In a state of “total war”, the major participants placed their entire economic, industrial, and scientific capabilities at the service of the war effort, erasing the 3) _ between civilian and military resources. Estimates for the total number of 4) _ of the war vary, because many deaths went 5) _. Most suggest that some 60 million people died in the war. Many civilians died because of disease, starvation, and 6) _.The war ended with the total victory of the Allies over the Axis in 1945. world War II altered the political alignment and social structure of the world. The United Nations was established to 7) _ international cooperation and prevent future conflicts. The Soviet Union and the United States emerged as rival superpowers, setting the 8) _ for the so-called Cold War, which lasted for the next 46 years. Meanwhile, the influence of the European great powers started to 9) _, while the decolonization of Asia and Africa began. Most countries whose industries had been damaged moved toward economic recovery. Political integration, especially in Europe, emerged as an effort to 10) ___ post-war relations.