028.
Hello, listeners. Welcome to Hengtong Hospital Radio. Before our music program starts, I'm going to repeat some of our hospital rules.
The hospital can sleep 800 patients. There are 8 beds in one ward on averge. The visiting hours are in the afternoon from 2:30 to 3:30 and in the evening from 7 to 8. But remember only two people can see you at the same time. Sorry about that, but you can imagine what would happen if we didn't have these rules.
The other rules are about our hours. We start pretty early--you might not be used to that. We wake you up at 6 o'clock, and breakfast is at 8 o'clock, lunch is at noon; there's a tea at 3:30 and supper is at 6 o'clock.
You can see the no smoking sign--we don't allow smoking in the wards, and the same goes for alcoholic drinks. I'm sure you understand why. However, if you do need to smoke, there are special areas where it is allowed.
You will find the radio switch on the wall near your bed, with your own headphones, if you want to listen. It is our own hospital radio wishing you a speedy recovery.

答案解析：
(1) 正确答案为C。根据Hello, listeners. Welcome to Hengtong Hospital Radio.大家好，欢迎收听Hengtong医院广播，以及之后播放医院规定等，可推知，听众为病人，因此C项正确。
(2) 正确答案为B。根据The visiting hours are in the afternoon from 2:30 to 3:30 and in the evening from 7 to 8. 探病时间为下午两点半至三点半，晚上七点至八点。可知，上午不允许探病，因此B项正确。
(3) 正确答案为A。根据Before our music program starts, I'm going to repeat some of our hospital rules. 在音乐节目开始前，我要先重复一下我们医院的规定。可知，在医院规定之后，是音乐节目，因此A项正确。