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During most of their lives, surge glaciers behave like normal glaciers, traveling perhaps only a couple of inches per day. However, at intervals of 10 to 100 years, these glaciers move forward up to 100 times faster than usual. The word "intervals" is closest in meaning to which of following?
(A) records
(B) speeds
(C) distances
(D) periods

答案：D
難度： 簡單
最佳解!
Bobo Gap 幼兒園下 (2018/04/12)
at intervals of 10 t☆ 100 ☆☆☆☆☆  ...


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1F
張睿紘 幼兒園下 (2016/12/21)

at intervals of 10 to 100 years, 

10-100 years為時間單位，則應選periods (週期)，可能誤選成(B) speeds 速度，應注意速度為距離/時間，因此不能選(B)


During most of their lives, surge glacie..-阿摩線上測驗