The phrase "a test has been" is correct and usable in written English.
It can be used when discussing the completion or occurrence of a test in the past that has relevance to the present.
Example: "A test has been conducted to evaluate the effectiveness of the new medication."
Alternatives: "a test was conducted" or "a test has occurred".
Expert forensic analysis of mitochondrial DNA - the first time such a test has been used in a criminal investigation - shows that Adam was almost certainly West African.
Some testers say that it is a matter of judgment when a test has been sufficiently validated, and that consumers have the right to information.
"This will enable [examiners] to conduct all types of tests, collect results electronically at source and improve customer services by sending results information to central systems immediately after a test has been completed," the agency's 2012-13 business plan says.
With best wishes, ______ To Karl Shapiro July 31 , 1987West Brattleboro Dear Karl: Every time I publish a novel it turns out that a test has been administered — no, two tests; in one I am graded by reviewers, while the other is mine, unintentionally given to my fellow Americans.
With best wishes, __________ To Karl Shapiro July 31 , 1987West Brattleboro Dear Karl: Every time I publish a novel it turns out that a test has been administered — no, two tests; in one I am graded by reviewers, while the other is mine, unintentionally given to my fellow Americans.
First, a test has been carried out considering a possible realistic measurement configuration for the network.
If a test had been around 30 years ago, he added, "there would have been a lot more people alive today".
Only in subjects where GERD was suspected might a test have been done.
The criteria for an adequate cervical screening test was that the women's records showed that a test had been completed within the previous five years.
Moreover, a testbed has been set up to experimentally evaluate the performance of the proposed security mechanism.
Finally, an additional stage that performs an octave test and a fifth test has been included.
