Thousands and thousands of people attended the president’s inaugural ceremony，with ages ________ from 5 to 100.
A.varying
B.changing
C.ranging
D.rating
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C解析这题考查range from...to...在……到……范围内变化；vary变化；改变；rate评价；列为。句意：成千上万的人们参加了总统的就职典礼，他们的年龄从5岁到100岁不等。