Same letters · tone only
Ready
听一听，是哪一个？
One syllable plays. Both answers are h + ao — only the tone changes.
This one is here because of 好.
Last time you said 你好, the tone on 好 stayed flat — and a flat third tone is what 号 sounds like. Hear the gap first, then say it.
Ear checks are free and always will be. Only scored speaking counts against the daily meter.