有关一氧化碳的英语短文阅读材料:Carbon Monoxide
编者按：一氧化碳是大气中一种重要的痕量气体,对全球变暖和大气化学有重要作用。以下关于一氧化碳的英语短文，适合作为初中生的阅读材料。
Carbon Monoxide
(一氧化碳)
Helen stepped outside her front door to see what the weather was like.
海伦走出前门，看看天气如何
It was sunny and warm.
阳光明媚，温暖宜人
That was nice, because for the past two weeks it had been cold and rainy.
这太好了，因为前两周，阴雨连连
It had been so cold that she had had to turn her heater on.
这太冷了，以至于她不得不打开了取暖器
She was lucky, because her heater worked and she could pay her heating bills.
她是幸运的，因为他的取暖器能正常工作，并且她可以承担起取暖费
Some people in Los Angeles were not so lucky.
洛杉矶的一些人就没有这么幸运了
Unable to use their home heater, they placed charcoal into a barbecue grill and lit it.
无法使用家里的取暖器，他们把木炭倒进烧烤架里并点燃
The heat kept them warm, but the carbon monoxide killed them.
(燃烧产生的)热量使他们保持温暖，但产生的一氧化碳却是致死的
This happens almost every winter in Los Angeles.
这样的事情几乎每年都会在洛杉矶发生
People shut all the windows tight to keep the cold out, then light the charcoal.
人们关紧窗户以防冷空气进入房间，然后点燃木炭
Soon enough, the oxygen in their home is consumed by the open flames.
很快，房子里的氧气就被明火消耗完了
The family suffocates to death.
家里的人窒息而死
Everyone knows that smoke detectors are required in Los Angeles.
大家都知道，在洛杉矶需要使用烟雾探测器。
But many people don't know about, or don't think they need, carbon monoxide detectors.
但是很多人不了解，也不认为他们需要一氧化碳探测器。
They're not expensive.
这并不昂贵
A $25 investment can save a family from death.25
美元的投资就可以使一个家庭免于死亡
People always think that nothing bad will happen to them; it always happens to "the other guy."
人们总是认为坏事不会发生在自己身上，它总是发生在“别人”身上
So they forget to put fresh batteries into their smoke detectors annually, and they don't bother to buy carbon monoxide detectors.
所以他们忘了每年把新的电池放入烟雾探测器，他们也不买一氧化碳探测器。
重点知识讲解
【相关句型辨识】
本文出现了被动语态，即 “be+V过去分词+(by)...” 的结构，被动语态表示主语是动作的承受者。注意被动语态的时态变化只用改变be动词，将来进行无被动。
例如:
Soon enough, the oxygen in their home is consumed by the open flames.
很快，房子里的氧气就被明火消耗完了.
Everyone knows that smoke detectors are required in Los Angeles.
大家都知道，在洛杉矶需要使用烟雾探测器。
知识讲解老师：Linda
公众号：小橙少儿英语
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