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) 正確答案為C。根據Hello, listeners. Welcome to Hengtong Hospital Radio.大家好，歡迎收聽Hengtong醫院廣播，以及之后播放醫院規定等，可推知，聽眾為病人，因此C項正確。
(2) 正確答案為B。根據The visiting hours are in the afternoon from 2:30 to 3:30 and in the evening from 7 to 8. 探病時間為下午兩點半至三點半，晚上七點至八點。可知，上午不允許探病，因此B項正確。
(3) 正確答案為A。根據Before our music program starts, I'm going to repeat some of our hospital rules. 在音樂節目開始前，我要先重復一下我們醫院的規定。可知，在醫院規定之后，是音樂節目，因此A項正確。