May a woman speak in church?

Yes, but she must cover her head.	No, women must be silent in church.
1 Corinthians 11:4-5 Every man praying or prophesying, having his head covered, dishonoureth his head. But every woman that prayeth or prophesieth with her head uncovered dishonoureth her head: for that is even all one as if she were shaven.	1 Corinthians 14:34-35 Let your women keep silence in the churches: for it is not permitted unto them to speak; but they are commanded to be under obedience as also saith the law. And if they will learn any thing, let them ask their husbands at home: for it is a shame for women to speak in the church.1

1. Bart D. Ehrman in Misquoting Jesus (p.184) says this about 1 Corinthians 14:34-35: "[O]n the basis of a combination of evidence -- several manuscripts that shuffle the verses around, the immediate literary context, and the context within 1 Corinthians as a whole -- it appears that Paul did not write 1 Cor. 14:34-35."