城镇网民人数占网民总数的比重为: A.78.6% B.80.9% C.21

tikufree2019-12-17  17

问题 城镇网民人数占网民总数的比重为:A.78.6% B.80.9% C.21.4% D.19.1%

选项

答案B

解析用十字相乘法做。城镇网民人数与农村网民人数之比为(62.7%-57.2%):(57.2%-55.9%)=55:13然后城镇文明人数占网民总数之比就是55除以55+13乘以100%=55/68>80%
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