问答题
1) the picture is not clear enough, and some channel buttons don’t work well;
2) sometimes there is no sound, and the color is not stable;
3) Customer First, Service Best.
You should write about 100 words on ANSWER SHEET 2. Do not sign up your own name at the end of the letter. Use "Li Ming" instead. You do not need to write the address. ( 10 points)