亲爱的恐龙:你们好!我是一名四年级的小学生。我特别爱看关于恐龙方面的书籍。我想问问,你们为什么会灭绝?是不是小行星撞地球?是不是火山爆发……有科学家说是某个星球撞到了太阳,尘埃把太阳遮住了,地球没有了阳光,动物植物都不生长了,食草恐龙因为没有食物饿死了,肉食恐龙也饿死了。科学家们废寝忘食地找化石找资料,可还有很多不同的解释,你们的消失仍是一个谜。你们有凶残的一面,也有温柔的一面,我不想 Dear dinosaur: Hello! I am a fourth grade primary school student. I especially love to read books on dinosaurs. I would like to ask, why do you extinct? Are not asteroids impacting the earth? Is it a volcano eruption ... ... Some scientists say that a planet hit the sun, the dust cover the sun, the Earth has no sunshine, animal plants are not Growing, herbivorous dinosaurs starved to death without food, dinosaurs also starved to death. Scientists are reluctant to find fossils to find information, but there are many different explanations, your disappearance is still a mystery. You have a cruel side, there are gentle side, I do not want to