写作：GRE作文ARGUMENT126篇真题四七

４７、The nation of Claria covers a vast¹ physical area. But despite wide geographic² differences, many citizens are experiencing rising costs of electricity. A recent study of household electric costs in Claria found that families who cooled their houses with fans alone spent more on electricity than did families using air conditioners alone for cooling. However, those households that reported using both fans and air conditioners spent less on electricity than those households that used either fans or air conditioners alone. Thus, the citizens of Claria should follow the study’s recommendation³ and use both air conditioners and fans in order to save money on electricity.