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Today, housework has been made much easier by electrical _____.
A．facilitiesB．a(chǎn)ppliancesC．instrumentsD．equipment
B
.考查名詞的用法。electric appliances電器用具，facilities公用設(shè)備。equipment設(shè)備,裝備，是集合名詞，指“設(shè)備”的總稱，只有復(fù)數(shù)形式。instrument儀器。
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