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néng shǐ ránzháo de mùtiáo yuè shāo yuè wàng de shì yǎngqì ，bèi diǎnrán de shì qīngqì hé yīyǎnghuàtàn 。ránhòu zài yòng chéngqīng de shíhuīshuǐ jiǎnyàn ránshāo shēngchéng de qìtǐ 。yīnwèi yīyǎnghuàtàn ránshāo huì shēngchéng èryǎnghuàtàn 。

The one that can make the wooden splint burn brighter and brighter is oxygen. The ones that ignited were hydrogen and carbon monoxide. Afterward, use the settled limewater again to test the gas produced by the burning. Because carbon monoxide produces carbon dioxide when burned.

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咦，这两瓶都点燃了。那我们怎么知道哪瓶是氢气哪瓶是一氧化碳啊？

yí ，zhè liǎng píng dōu diǎnrán le 。nà wǒmen zěnme zhīdào nǎ píng shì qīngqì nǎ píng shì yīyǎnghuàtàn a ？

Oh, both of these bottles ignited. So, how will we know which one is hydrogen and which is carbon monoxide?

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一氧化碳和氢气能被点燃。

yīyǎnghuàtàn hé qīngqì néng bèi diǎnrán 。

Carbon monoxide and hydrogen are combustible.

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大家看，这4瓶气体是氢气、氧气、一氧化碳和二氧化碳，可是没有标签，我们该怎么鉴别？

dàjiā kàn ，zhè sì píng qìtǐ shì qīngqì 、yǎngqì 、yīyǎnghuàtàn hé èryǎnghuàtàn ，kěshì méiyǒu biāoqiān ，wǒmen gāi zěnme jiànbié ？

Look, everyone. These four vials of gas hold hydrogen, oxygen, carbon monoxide, and carbon dioxide. But they aren't labeled, so how do we distinguish them?

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其实呢，混合动力车也是大势所趋，迟早要普及的。许多新能源不断被开发出来，像电能、氢气、太阳能甚至生物能都被逐步地应用到汽车上。特别在倡导环保方面，国外开混合动力车就是一种潮流。

qíshí ne ，hùnhé dònglì chē yě shì dàshìsuǒqū ，chízǎo yào pǔjí de 。xǔduō bùduàn bèi kāifā chūlái ，xiàng diànnéng 、qīngqì 、tàiyángnéng shènzhì shēngwùnéng dōu bèi zhúbù de yìngyòng dào qìchē shàng 。tèbié zài chàngdǎo huánbǎo fāngmiàn ， kāi hùnhé dònglì chē jiù shì yī zhǒng cháoliú 。

Actually, hybrid cars are the current trend. Sooner or later, they'll be common enough. Many new forms of energy being developed and released like electricity, hydrogen power, solar power and even bio-energy, will all gradually be applied to vehicles. Especially because of the ways in which they promote environmental friendliness, abroad, hybrid cars are a kind of craze.

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