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[Problem Solving]
试题详情
题目：
Which of the following statements can be inferred from the data above?
I. The Klein family's annual income more than doubled from 1985 to 1995.
II. The Klein family's annual income increased by a greater amount from 1985 to 1990 than from 1990 to 1995.
III. The Klein family's average (arithmetic mean) annual income for the period shown was greater than $40,000.
选项:
A、I only
B、II only
C、I and III only
D、II and III only
E、I, II, and III
答案:
C
提问：
第三个条件为什么对的？就这么算出来的吗？
解答：
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阅读703
提问：
第三个条件为什么对的？就这么算出来的吗？
解答：
点赞0
阅读704
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