计数资料是指______。

A．将观察单位按某种属性或类别分组，然后观察单位个数的资料

B．一般为无序变量

C．观察单位个数所得的资料

D．如缺乏病人数等

E．一般有单位为有序变量

单词拼写。

1．Millie is twelve ______ (岁数)old．

2．My ______ (爱好)are football and volleyball．

3．After school，Daniel usually______(玩)with his friends．

4．She has ______ (短的)black hair．

5．It’s a fine day today．Let’s go out for a ______ (散步)．

6．She is a ______(苗条的)girl．

7．You must be ______ (礼貌的)．

8．My father often ______ (看)newspapers at lunchtime．

9．I’m free today．What about _________(去)to the park?

10．Please write down those ______names．(儿童)