The first question has to do with our recent discussion of English language tests.

VOA: special.2009.01.15

After their first tests, the researchers cleaned the water system with chlorine dioxide.

VOA: special.2011.04.06

A spokesman for the group says CT scans are frequently used in hospital emergency rooms because the results can be read quicker than with other tests, like ultrasound or MRIs, that do not use radiation.

VOA: standard.2010.01.30