"Taxed" has a few meanings. You can be taxed by the government, meaning you have to pay a portion of your salary to support that government. Or you can be taxed by a person. This means that the person is making very difficult demands and is putting a strain on you. (ex: My boss taxed me with his requests) The first form of the word is more common, at least in the USA. "Tested" means that something has been proved useful or correct, or you would test the quality of something. ex: I tested the milk to see if it was sour.

“taxed” means 缴税,被征税的， "tested"means 测试