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Questions refer to the following graph.[img]2012q1/ct_egreqm_egreqtbz2_0290_2
Questions refer to the following graph.[img]2012q1/ct_egreqm_egreqtbz2_0290_2
游客
2025-02-24
12
管理
问题
Questions refer to the following graph.
[br] If every student who was in the eleventh grade in 1996 and who used a computer in school at least once a week used a computer at least once a week in 1997, and if 20% of those students who were in the eleventh grade in 1996 and who did not use a computer in school at least once a week, did use a computer in school once a week in 1997, then what percent of twelfth-graders in 1997 used a computer in school at least once a week?
选项
A、40%
B、50%
C、60%
D、70%
E、80%
答案
C
解析
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