听力原文：W Hi Tom, I tried installing my new car stereo, but I guess I'm just not good wit

h electronics. Do you think you can help me？

M I've never installed a car stereo before. I'm not sure I'd be able to do it.

W Oh. I figured since you were able to wire your home system, you could install a car stereo. Do you have any friends who can do it？ I'm afraid a professional might be expensive.

M Well, let me look at the directions first. I'll stop by later this afternoon and try to do it, and if I can't, you should have it done professionally. I don't think it's very expensive at all.

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