虽然国家和社会为未成年人的健康成长提供了必要的条件和保护，但未成年人如果自我保护意识不强，仍会使自己的身心健康和合法权益受到损害。请问：未成年人应该如何增强自我防范意识？

读《在希望的田野上》，“希望的田野”，就是____。也就是生活在这片土地上的____充满希望。

某小组在分解过氧化氢制氧气的实验探究过程中，不小心把硫酸铁溶液滴加到了盛有5%H₂O₂的溶液的试管中，立即有大量的气泡产生．

【提出猜想】硫酸铁溶液中的哪种粒子能使双氧水分解的速率加快．

【查阅资料】硫酸铁溶液中含有三种粒子（H₂O、SO₄^2﹣、Fe³⁺），硫酸溶液中含有三种粒子（H₂O、SO₄^2﹣、H⁺）．

【实验验证】同学们设计图1所示的实验完成这次探究活动．

阅读对话，根据上下文补全对话，使对话完整。每空不限填1个单词并在答题卡上将答案填写在对应题号的横线上。
A:  Good morning, doctor!
B:  Good morning, young man! What's ____ ?
A:  I've got a headache and a cough.
B:  How ____  have you been like this?
A:  Ever since last night.
B:  Have you take your temperature?
A:  Yes, it's a little high.
B: ____ have anything for breakfast?
A:  Yes, I did. Only a few noodles. But I don't feel like eating anything.
B:  Well, you have caught a cold.
A:  Is it____ ?
B:  No, nothing serious! Take this medicine three times a day and drink more____ . You'll be all right