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

A steady flow is one in which all conditions at any point in a stream remain constant with respect to time, but the conditions may be different at different points.()

To become an aircraft mechanic, you must take oral and practical tests as well as written tests. A: 正确 B: 错误

Dr. Franklin gives hard tests. Her tests are more difficult than.........................(Dr. Barton, Dr. Barton’s)

For years, universities have used these tests to help measure an ___________ academic skills.