阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。续写的词数应为150左右。
   Alan and the other campers sat around the fire，talking and laughing.It would be Alan's first night in a tent，and he was excited and a little nervous.
   Then，the conservation area officer spoke， "Much of the wildlife in this region comes out only at night.So after supper，let's start a night watch.Volunteers will take turns to stay down here by the fire，away from the tents.Those who take part will get a chance to see a different world."
   "Isn't it dangerous？" someone asked.
   "No，it's quite safe，" the officer said. "There are no dangerous animals.Any volunteers？"
   The kid who'd sat next to Alan on the bus volunteered.
   Alan sat still.
   Then one of the girls raised her hand.
   "If a girl could do it，I could，too，" Alan thought.He volunteered.A few more kids raised their hands.Then the officer explained， "This is how it works.When the rest of you go to bed，the first watcher takes his or her place by the fire.The duty of the watcher is to keep the fire going.After thirty minutes，he or she wakes up the next person.Do you still want to volunteer？"
   Alan nodded but felt a little nervous.Sleeping in a tent with other campers sounded OK，but the idea of being alone in the dark made him afraid.
   The officer showed the order of the watch.
   At ten past two in the evening，Alan found himself sitting by the fire，in a great world of darkness.He had never been so afraid.Alan had to turn off his flashlight（手电筒） because he had used it too often.He looked at the stars and the rising moon.It wasn't as dark as he'd thought it would be.He took comfort in that and tried to relax a little.
   Looking around，Alan thought he saw a large bird flying down through the air and wondered if it was an owl（猫头鹰）.He had seen small paw prints on the sand by the river.
Paragraph 1：
   Then there was a noise.__________________________________________________
Paragraph 2：
   Alan felt a rush of excitement._______________________________________________