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【简答题】
Suppose that people consume only three goods, as shown in this table: a. What is the percentage change in the price of each of the three goods? b. Using a method similar to the consumer price index, compute the percentage change in the overall price level. c. If you were to learn that a bottle of Gatorade increased in size from 2014 to 2015, should that information affect your calculation of the inflation rate? If so, how? d. If you were to learn that Gatorade introduced new flavors in 2015, should that information affect your calculation of the inflation rate? If so, how?
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举一反三
【简答题】如图，数轴上的三点A，B，C分别表示有理数a，b，c，化简|a﹣b|﹣|a+c|+|b﹣c|．
【简答题】如图，数轴上的三点A、B、C分别表示有理数a、b、c，则化简|a﹣b|﹣|c﹣a|+|b﹣c|=（ ）．
【单选题】如图表示人体血液循环模式图的一部分，若图中c表示肺部毛细血管，箭头表示血流方向，则a、b分别表示（ ）
A.
a是上、下腔静脉，b是主动脉
B.
a是主动脉，b是上、下腔静脉
C.
a是肺动脉，b是肺静脉
D.
a是肺静脉，b是肺动脉
【简答题】如图，数轴上的三点A、B、C分别表示有理数a、b、c， 化简|a-b|-|a+c|+|b-c|.
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