The washing machine is environmentally friendly because it uses water and electricity than models.
A. less…older
B. less…elder
C. fewer…older
D. fewer…elder
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(答案→)A. less…older
B. less…elder
C. fewer…older
D. fewer…elder
解析：句意：这台洗衣机非常环保，因为与旧样式相比，它用更少的水和电。故选A。