GRE Reading Comprehension: OG/PP2-GRE阅读OG/PP2 - B4IB0GD65TCF5843P

Which of the following, if true, most helps to explain why the time spent washing clothes increased in rural areas? A. People with access to an electric washing machine typically wore their clothes many fewer times before washing them than did people without access to electric washing machines. B. Households that had sent their clothes to professional laundries before 1925 were more likely than other households to purchase an electric washing machine when they became available. C. People living in urban households that had previously sent their clothes to professional laundries typically owned more clothes than did people living in rural households. D. The earliest electric washing machines required the user to spend much more time beside the machine than do modern electric washing machines. E. In the 1920s and 1930s the proportion of rural households with electricity was smaller than the proportion of urban households with electricity.