The current ratio: () A: Is used to measure a company's profitability. B: Is used to measure the relation between assets and long-term debt. C: Measures the effect of operating income on profit. D: Is used to help evaluate a company's ability to pay its debts in the near future.

With painstaking efforts for many years, they have at last ______ perfection in their skills. A: remained B: obtained C: contained D: attained

In the Academic Writing part, Alex discussed with Ruoqi on academic skills, such as ______.

The purpose of the passage is _________. A: to inform us that<br/>all tests are valid, although they have some shortcomings B: to evaluate the<br/>standardized tests C: to expose the<br/>defects of the standardized tests D: to justify the<br/>standardized tests and show how they can be used properly

I remember that ______ an old church on the top of the hill many years ago. A: used to be there B: there used to be C: there used to have D: there had