抽查我校一月份5天的用电量，结果如下：（单位：度）120，160，150，140，150，根据以上数据估计我校1月份用电总量为______度．

There are only ______ differences ______ the twin sisters. [ ]

A. a few; between

B. few; between

C. a little, among

D. little; among