[A] on [B] for [C] as [D] about

参考答案:

C本题考查句子结构及介词用法。空格所在句子中出现了倒装结构，由于其宾语intellectual exercises的后置定语较长，因此将宾补valueless提前。该句子的正常语序是Roman theorists ignored, or rejected intellectual exercises__3__valueless。能够引出宾补的介词只有［C］as，如I respect him as a doctor.（我尊敬他这个医生。）You can use that glass as a vase.（你