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The price of a gallon of gasoline at the pump increased by 1

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The price of a gallon of gasoline at the pump increased by 10 percent at the
a.increased; increased
b.increased; decreased
c.increased; did not change
d.decreased; decreased
e.decreased; increased
The price of a gallon of gasoline at the pump increased by 1
问题不全吧
再问: The price of a gallon of gasoline at the pump increased by 10 percent at the same time that the inflation rate was 10 percent. The nominal price of gasoline _____ and the real price of gasoline _____.
再答: AB两个选项需要专业知识排除一个,爱莫能助了。意思是:一加仑汽油的价钱增长了10%,同时通货膨胀率是10%,那么,汽油的名义价格是 (增加了),真实价格(增加了就是a 降低了就是b)