问题
多项选择题
以下哪些车辆通行时可以免费通行（）。
A.县以上森林防火部门证明的运送扑火人员的运输车辆
B.中国地震局地震监测车辆
C.装备人工影响天气作业设备的车辆
D.装备人工增雨设备和弹药并实施作业的车辆
答案
参考答案：A, C, D
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以下哪些车辆通行时可以免费通行（）。
A.县以上森林防火部门证明的运送扑火人员的运输车辆
B.中国地震局地震监测车辆
C.装备人工影响天气作业设备的车辆
D.装备人工增雨设备和弹药并实施作业的车辆
参考答案：A, C, D
Many families in the United States observe National Grandparents Day on the first Sunday of September after America’s Labor Day. People often 36 their parents on this day. Many people 37 the day through a lot of activities such as gift-giving and card giving. Some children 38 their grandparents to school for a day where they take special lessons. Some students 39 storytelling activities that relate to their grandparents, as well as picture or music competitions where children use a story about their grandparents in their 40 . About four million greeting cards are 41 within the United States each year on National Grandparents Day. This day is also a 42 for people to appreciate and express their 43 to their grandparents through 44 actions such as making a phone call and inviting their grandparents for dinner. People living in nursing homes may 45 a visit from their grandchildren. National Grandparents Day has more than one 46 . Some people consider it to have been first proposed by Michael Goldgar in the 1970s after he visited his aunt in an Atlanta nursing home. Others 47 Marian Lucille Herndon McQuade to have been the main 48 of National Grandparents Day. Throughout the 1970s McQuade worked hard to 49 people about the important contributions senior citizens made and the contributions that they would be willing to make 50 asked. She also urged(强烈要求) people to take good care of a grandparent, not for one day a year and not for material giving, 51 for a lifetime of experience. National Grandparents Day was 52 signed into law by President Jimmy Carter in 1978. Marian McQuade received a phone call from the White House to 53 her of this event. Many people believe that National Grandparents Day was inspired by her 54 . A presidential proclamation(声明) on September 6, 1979 made this day 55 .
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