ni hao ma
that's why the lowest position is the best i guess. the way the internet is, some layfolk need a hole in the ground, and to be placed there. thank god there are things like this on the internet, to justify its existence.
in anycase, i wish you luck in your goal of learning english. one helpful piece of advice and far as tone. in english, we generally raise the tone on the last word in the sentence to signify that we have asked a question. So, in the sentence, "You picked me?", the word , "me", is spoken in a higher pitch.
again, good luck.