If you're uncertain about whether to object to a deposition question because you're not sure you heard it correctly, ask the reporter to read the question back. The procedure is simple: just say, "Read the question back, please" before the witness answers. But don't overdo it. I've encountered lawyers who think they can use this technique to distract the questioning lawyer and slow the deposition down. If done for this reason, asking the reporter to read questions back is clearly improper.