A. Which

　　B. What

　　C. That

　　D. Where

　　【答案】【知识点】A13 名词性从句中的主语从句用法

　　【答案解析】解析：选B，题干是主系表结构，系动词为was，故前面应是主语从句，从句中缺少主语，指物应用what，引导从句

　　【英语卷（解析）·2017届江苏省南京市金陵中学高三第四次模拟考试（201705）】

　　A13 33. A heated debate was set off by his proposal at the meeting yesterday over _______it

　　is practical in our area.

　　A. what

　　B. when

　　C. whether

　　D. that

　　知识点：宾语从句

　　解析：选C，他昨天在会上提出一条建议，有关这天建议是否在我们地区使用激起了一场热烈的讨论。故选C。

　　点拨：名词性从句主要看句意。

　　阅读理解。

　　Which is safer --- staying at home, traveling to work on public transport, or working at the office? Surprisingly, each of these carries the same risk, which is very low. However, what about flying compared to working in the chemical industry? Unfortunately, the former is 65 times riskier than the latter! In fact the accident rate of workers in the chemical industry is less than that of almost any of human activity, and almost as safe as staying at home.

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