问题
单项选择题
以下（）最好地说明了属性取样和变量取样的区别。
A.前者关注预防，后者关注检查
B.前者关注是否与标准一致，后者关注与标准一致的程度
C.前者关注某些特殊因素，后者关注所有因素
D.两者是同一概念
答案
参考答案：B
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以下（）最好地说明了属性取样和变量取样的区别。
A.前者关注预防，后者关注检查
B.前者关注是否与标准一致，后者关注与标准一致的程度
C.前者关注某些特殊因素，后者关注所有因素
D.两者是同一概念
参考答案：B
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| On Saturday morning, I usually get up very late. I wash my face and then go out to 1 morning exercises. After I have my 2 , I often go to a shopping center 3 my mother at about 8: 20 a.m. The shopping center is near our home, so we walk there. It 4 us about l5 minutes to get there on foot. The shopping center is new 5 big. There are many things there, such as TVs, fridges, computers, clothes, food and drinks. I like the clothes there. They look very lovely. There are many 6 there. They are men and women,old and 7 . Parents have to 8 their children because it is too crowded there. Children may get lost in it. 9 do many people come here to buy things? Because the things here are usually good and cheap. It's a lot of 10 doing shopping in it. | ||||
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