What is the reason for pain（疼痛）？Pain hurts us，but could it be good for us？Is pain in fact helpful？
Pain is a way to tell us that something is wrong in our body.We should stop what we are doing to protect the body.For example，if you break your leg，pain stops you from walking on it.If you didn't feel any pain，you would continue walking around and you could hurt your leg worse.But why does it continue to hurt even after you have stopped walking on your hurt leg？That is because your body needs you to rest in order to have the energy to mend（治愈）the broken bone.
But how does pain work？We have special cells（細(xì)胞）in our skin，our eyes，and inside our bodies，too.When something goes wrong，these cells send messages to the brain.The brain then makes us feel pain so we will stop doing whatever is causing the pain.Put your hand into hot water，and your hand's skin cell tell your muscles（肌肉）and your brain.Your muscles are able to move your hand away from the heat quickly.At the same time，your brain gets the message that something is wrong and you need to care for your hand.It all happens in less than a second.
But did you know that the brain itself cannot feel pain？In fact，when doctors cut into the brain，they do not put the person to sleep.Because the person does not feel any pain in the brain，it is thought to be much safer if the person is awake while the doctor is working.
（1）What's the passage mainly about？ It's mainly about how the body protects itself.It's mainly about how the body protects itself.
（2）What is the reason for pain？ Because something is wrong in our body.Because something is wrong in our body.
（3）How does pain work？ When something goes wrong，these special cells in our skin，our eyes，and inside our bodies send messages to the brain.The brain then makes us feel pain so we will stop doing whatever is causing the pain.When something goes wrong，these special cells in our skin，our eyes，and inside our bodies send messages to the brain.The brain then makes us feel pain so we will stop doing whatever is causing the pain.
（4）Why don't doctors put people to sleep when they work on the brain？ Because it's safer for people to stay awake.Because it's safer for people to stay awake.
【考點(diǎn)】說(shuō)明文；衛(wèi)生與健康．
【答案】It's mainly about how the body protects itself.；Because something is wrong in our body.；When something goes wrong，these special cells in our skin，our eyes，and inside our bodies send messages to the brain.The brain then makes us feel pain so we will stop doing whatever is causing the pain.；Because it's safer for people to stay awake.
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/6/19 8:0:9組卷：1引用：1難度：0.5
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★★★★★
5 stars = Fantastic!
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A．Willy Wonka was the owner of the chocolate factory.
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D．The other four children went into the factory without invitation.發(fā)布：2025/1/30 8:0:1組卷：10引用：2難度：0.9