下列对实验现象的描述正确的是（ ）
A．红磷燃烧产生大量的白雾，放出热量
B．碳在氧气中燃烧更旺，发出白色火焰
C．细铁丝在氧气中剧烈燃烧，火星四射，放出热量，生成黑色固体
D．硫在空气中燃烧，发出蓝紫色火焰，生成有刺激性气味的气体
A、红磷在空气或在氧气中燃烧，产生大量的白烟，而不是白雾，故选项说法错误．
B、碳在氧气中燃烧更旺，发出白光，而不是白色火焰，故选项说法错误．
C、细铁丝在氧气中剧烈燃烧，火星四射，放出大量的热，生成一种黑色固体，故选项说法正确．
D、硫在空气中燃烧，产生淡蓝色火焰，产生一种具有刺激性气味的气体，故选项说法错误．
故选C．
Much meaning can be carried clearly with our eyes, so it is often said that eyes can speak. Do you have such kind of ? On a bus you may look at a stranger, but not too long. And he finds that he is being looked at, he may feel uncomfortable. It is the same in daily life. If you are looked at for necessary, you will look at yourself up and down, to see if there is wrong with you. If nothing goes wrong, you will feel with the person who is looking at you that way. Eyes do speak, right? Looking too long at someone may seem to be impolite. But sometimes things are . If a man looks at a woman for more than 10 seconds, it may mean that he wishes to attract her attention, to make her understand-that he loves her. When two people are in a conversation, the will look at the listener from time to time, in order to make sure that the listener does pay attention to what he or she is speaking. Lovers will looking at each other or being looked at for long time, to show something that cannot express. So contact should be done accordion the relationship (关系) between two people and the place where you stay.
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