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The owner of Steele’s Grocery in Osage, Ohio, saved $600 monthly on heat during the winter by putting all his refrigerator air compressors together in an insulated compartment, then installing two fans and a duct that carried waste heat from the compressors into the main part of the store.D 注意,此处的then副词做连词用。 (A) then installing two fans and a duct that carried
(B) then he installing two fans and a duct that carried
(C) then two fans were installed with a duct that carried (D) installing two fans, and then carrying through a duct
(E) installing two fans, and a duct carrying
为什么选A呢 then installing和整个句子是什么关系呢 |
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