GRE考试

根据网考网考试中心的统计分析，以下试题在2019/2/27日GRE考试习题练习中，答错率较高，为：97%
【单选题】Questions refer to the following graph.

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 weekA．40%
B．50%
C．60%
D．70%
E、80%

网考网参考答案：C，答错率：97%
网考网试题解析：
In 1996, 50% of eleventh-graders used com-puters in school at least once a week, and 50% did not. Of the 50% that did not use com-puters in school at least once a week, 20% of them did use them the following year: 20% of 50% = .20 × .50 = .10 = 10%. So, in t997, 60% (50% + 10%) of the twelfth-graders used computers in school at least once a week. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>