大全226再問

226 Cooperative apartment houses have the peculiar distinction of being dwellings that must also operate as businesses.

(A) of being dwellings that must also operate as businesses

(B) of dwellings that must also operate like business

(C) that they are dwellings that must operate like business

(D) that, as dwellings, they must also operate like businesses（A）

(E) to be a dwelling that must also operate as a business

1.that指代dwelling？若如此，dwelling是单数、为何businesses是复数？

2.Operate as 为固定搭配？但新东方老师说as后要跟句子 ，like后跟名词，要如何判断as在句中是介词或连词用？我本来选B，因看到like 及

1－dwellings是复数；

2－as作为连词时跟句子，作为介词时跟名词性短语，比如act as a hero.

Thank you. 因为新东方的补充材料dwelling少s.

所以看到as 及like都出现，还是要从句意看是当连词或介词，对吗？