In the major cities of industrialized countries at the end of the nineteenth century, important public places such as theaters, restaurants, shops, and banks had installed electric lighting, but electricity was in less than one percent of homes, where lighting was still provided mainly by candles or gas.


electricity was in less than one percent of homes, where lighting was still

electricity was in less than one percent of homes and lighting still

there had been less than one percent of homes with electricity, where lighting was still being

there was less than one percent of homes that had electricity, having lighting that was still

less than one percent of homes had electricity, where lighting had still been

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题目分析：
本题考点比较明确，难度不算很大。

选项分析：

A选项：Correct. 本选项在语法和逻辑上均是正确的。where lighting was still provided mainly by candles or gas是一个定语从句，可以理解为：
in which lighting was still provided mainly by candles or gas.
定语从句整体的内容为：
lighting was still provided mainly by candles or gas in homes.

B选项：不同于选项(A)，本选项的lighting was still provided mainly by candles or gas不是定语从句，而是和electricity was in less than one percent of homes构成了一个合句（当然，原选项在lighting后面缺少谓语动词was）。虽然在语法上没有问题，但是在逻辑上两句话不能构成并列关系。可以观察到，lighting was still provided mainly by candles or gas中是完全没有提到homes的（选项(A)中由于这句话是一个定语从句，所以先行词homes会在从句中做状语），也就是说我们可以把这个句子近似写为：
lighting was still provided mainly by candles or gas in X.
显然地，这句话和electricity was in less than one percent of homes之间无法产生并列关系（例如：我们不能说：电只在小于1%的家庭中出现，并且，在商场里，光亮主要由燃气和蜡烛提供。这也和前文矛盾嘛）。
另外，也可以理解为并列连词and身后没有谓语动词。

C选项：where引导的定语从句最近的名词是electricity，这会使得该定语从句的先行词变为electricity，在逻辑上不合理。

D选项：having lighting在本选项中可以做定语从句homes had electricity的伴随状语。在逻辑上，我们不能说“房子拥有光亮（home have lighting）“，只能说”房子里有光“。这是因为房子不能主动的拥有光亮。

E选项：where引导的定语从句最近的名词electricity，该错误同(C)；房子不能主动拥有光亮错误同选项(D)。

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