大全885C-18. 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 答案是A，我选的D，我的问题是D有什么问题，是不应该有AND吗，我记得XDF曾经说过n个元素并列时，n大于2，x1，x2，x3，andx4，是这个错误吗 再有一道大全885c-21 After Queen Isabella asked Admiral Columbus to describe the island of Hispaniola (now Haiti), which was newly discovered, he had reached for a sheet of paper, crumpled it, and said, “It looks like that—beyond the mountains, more mountains.”C (A) After Queen Isabella asked Admiral Columbus to describe the island of Hispaniola (now Haiti), which was newly discovered, he had reached (B) On being asked to describe the new discovery of the island of Hispaniola (now Haiti) by Queen Isabella, Admiral Columbus, reaching (C) Queen Isabella asked Admiral Columbus to describe the newly discovered island of Hispaniola (now Haiti), then he reached (D) When asked by Queen Isabella to describe the newly discovered island of Hispaniola (now Haiti), Admiral Columbus reached（D） (E) After Queen Isabella had asked Admiral Columbus to describe the discovery of the island of Hispaniola (now Haiti), he had reached 正确答案是D，我选了C，这道题我有如下几个问题 1.A和E中，是不是after。。。he reached的时态有错误？ 2. On being asked to describe the new discovery of the island of Hispaniola (now Haiti) by Queen Isabella，是不是有new discovery。。。by queen的歧义
3.也就是我为什么把两道题放一起的原因：在第一道题的正解A中，我觉得then起到的是连词的作用，连接两个步骤，虽然then是副词;但是到了第二题中then he这句为什么就不对了呢？
请大家讨论并帮忙解答谢谢
| 
