题目

Mr. White turned the land behind his house into a chicken farm, which would____have been deserted. A. therefore           B. however            C. otherwise       D. anyhow   答案：C函数f(x)=loga(2x-12) (a＞0，a≠1)的定义域是（　　） A、（-∞，-1）B、（-1，+∞）C、（-∞，1）D、（1，+∞）