问题
单项选择题
某市调查了100例正常人的血铅含量（μg/100g），其频数分布呈正偏峰分布表示集中趋势应选什么指标（）。
A.算术均数
B.几何均数
C.中位数
D.众数
E.标准误
答案
参考答案：C
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某市调查了100例正常人的血铅含量（μg/100g），其频数分布呈正偏峰分布表示集中趋势应选什么指标（）。
A.算术均数
B.几何均数
C.中位数
D.众数
E.标准误
参考答案：C
An old man once had an argument with his only son. He tried to __16__ many times, but the young man would not __17__. The father never__18__ because he loved his son with all his heart, but the son would not give in, __19__ he was too blinded by his pride. Years passed and as the man lay in his deathbed, he made a __20__ attempt to reconcile (和解) with his son, but __21__ he would not listen and so the father died with a heart full of __22__. During this time the son too had a child who had now __23__ into a young adult. To this child he never __24__ his father and when the young man asked about his grandfather he __25__ tell him never to mention him again. One day, they two were involved in a hot __26__ and his son fled away as he did many years ago. This made the man extremely__27__ and this time he had no __28__, but felt completely isolated. (孤立的) He was afraid that he would__29__ his son forever and for the first time after many years he realized how his father must have__30__ many years back. He remembered how he had __31__ his old man and only at that point he realized the extent of the hurt he had caused. The __32__ he thought the more he understood how unjust he was with his old father, the man who gave him everything __33__ his life. With these sad thoughts he felt __34__ on the couch. The next morning when he opened his eyes he found __35__ lying in his bed and in front of him stood his son. The man could not believe his eyes, and the two hugged each other while they cried together.
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