007.
We've just received the news that Hurricane Harry has changed its course and is now heading straight for the mainland. We expect to have winds of over 150 miles per hour. The hurricane should arrive at about 3 this afternoon. Please get prepared for it. Cover your windows with boards as much as possible. Tie your boats down well. No camping is allowed on the beach; it's too dangerous. If you're planning to leave for the day, try to get out of the town before three. For those of you staying in town, stay indoors and out of your cars.
After the hurricane dies down, be careful of loose wires. The electricity company will be out repairing the wires as soon as possible; don't touch any wires on the ground. If your electricity goes out, be patient. The electricity company will be working as quickly as possible. Keep your radios tuned to this station for further information.

答案解析：
(1) 正确答案为A。根据If you're planning to leave for the day, try to get out of the town before three. 如果你计划今天外出，尽量在三点前离开。可知，对那些想外出的人来说，要在三点前离开，因此A项正确。
(2) 正确答案为C。After the hurricane dies down, be careful of loose wires.在飓风平息以后，要格外注意松动的电线。可知，一些电线可能在飓风过境后出现问题，因此C项正确。
(3) 正确答案为B。根据Keep your radios tuned to this station for further information.确保你们的电台调到这个频道，以接收更多信息。可知，广播员在最后建议听众密切留意更多的信息，因此B项正确。