21. With what is the passage mainly concerned ?

　　(A) The drawbacks of descriptive and inferential statistics

　　(B) Applications of inferential statistics

　　(C) The development and use of statistics

　　(D) How to use descriptive statistics

　　22. The word divergent in line 1 is closest in meaning to

　　(A) different

　　(B) distributed

　　(C) recorded

　　(D) prominent

　　23. According to the first paragraph, counting and census-taking arc associated with

　　(A) inferential statistics

　　(B) descriptive statistics

　　(C) unknown variables

　　(D) qualitative changes

　　24. Why does the author mention the mother and father in the first paragraph?

　　(A) To point out that parents can teach their children statistics

　　(B) To introduce inferential statistic

　　(C) To explain that there are different kinds of variables

　　(D) To present the background of statistics in a humorous and understandable way

　　25. The word squarely in line 8 could best be replaced by

　　(A) solidly

　　(B) geometrically

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