(单选题)

Famous people are helping the anniversary by ______.

A.building parks in their backyards

B.filming people in the national parks

C.sharing their national park experiences

D.helping people to find a park near their home

参考答案：C

参考解析：

细节理解题。根据第五段第二句“American First Lady Michelle Obama and former First Lady Laura Bush were invited to share their national park stories…”、第七段最后一句“… actress Bella Thorne are two of the people who have shared their personal national park stories”和第八段第一句“The program wants the public to share park experiences and memories”可知，名人们通过分享他们在国家公园的经历来助力周年纪念日。故选C。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语