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题库 / GMATLA-SC-91
Although women's wages are improving, Department of Labor statistics show that the ratio of their earnings with that of men have been roughly static since 1960.
with that of men have been
to that of men are
to those of men have been
with those of men is
to those of men has been
题目分析：本题难度比较低，只要能把宾语从句中的主语以及一些简单的“比较”搞清楚就可以选出答案。
选项分析：
选项A：首先，在习语上应该是the ratio of A to B而不会用with。这是因为，讨论的是A到B的比率，所以应该表示方向的介词to，而不是表示“随着”的介词with。其次，本题的比较对象是“女性的收入”和“男性的收入”，由于earnings是复数名词，所以需要把单数代词that of改为those of。最后，宾语从句的主语是ratio是单数名词，所以谓语动词需要用has been而不能用have been。
选项B：that of应改成those of错误同选项(A)。另外，时态有误，宾语从句最后的时间状语是自“从1960年（since 1960）”，因此，其中的谓语动词必须用现在完成时。当然，本选项依然存在主谓一致的错误，同选项(A)。
选项C：宾语从句的主谓一致错误同选项(A)。
选项D：with应该改成to错误同选项(A)。主谓一致错误以及时态错误同选项(B)。
选项E：Correct. 本选项在语法和逻辑上均是正确的。
the ratio of A to B； A & B必须是可比的
the ratio of A to B，所以应该是women's earnings :men's easrings,主语为ratio，谓语为has been