问题
单项选择题 共用题干题
某乡有人口2万人约5000户，欲以户为单位抽其中2000人进行某病的调查。
在本次抽样中间隔的户数是（）。
A.20
B.10
C.5
D.2
E.资料不足，不能计算
答案
参考答案：B
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某乡有人口2万人约5000户，欲以户为单位抽其中2000人进行某病的调查。
在本次抽样中间隔的户数是（）。
A.20
B.10
C.5
D.2
E.资料不足，不能计算
参考答案：B
| 用方框中所给单词的适当形式填空，使短文正确、通顺。每词限用一次。 | |
start a special day 1 Buy Nothing Day. They don't want anyone to go 2 on that day. Buy Nothing Day is on November 29. It is 3 Thanksgiving. Often, before Christmas we see many ads. in 4 and on TV 5 us to "buy, buy, buy!" The idea for Buy Nothing Day 6 in Vancouver, Canada. Now people all over the world 7 Buy Nothing Day. In California, the U.S., 8 and children get 9 to read stories, sing songs and draw pictures. The children talk about 10 they can't get many toys. |