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    Everyone knows that chickens lay eggs(产卵). Most people know that all the other birds do as well. But have you ever thought about other animals that lay eggs? They include bees, snakes and some sea animals. When a mother lays eggs, many more babies can be born at once, or in a few days, because there is very little development inside the parent. Animals that do not lay eggs often have fewer babies. Animals lay many eggs because other animals may eat the babies. However, even though some of their babies are eaten, they will still have some more to continue their family.
    Some animals that lay eggs do not take care of their young. Turtles come onto the beach and dig holes. Then they put their eggs in the sand and leave. A turtle mother can lay as many as 150 eggs. When the babies come out of the eggs, they must find their own way to the ocean. They must learn how to live on their own. Many young turtles get eaten by other animals.
    Most eggs have an outside shell that keeps the growing animal inside safe. The egg shell also keeps the young animal from drying out. After the animal is fully developed, it comes out of the egg.
    The animal grows bigger and bigger. Then it can have its own young.
    小题1:Why do animals lay many eggs?
    A．Because other animals may eat their babies.
    B．Because they use their eggs for food.
    C．Because they want to have fewer babies.
    D．Because they want to eat their babies.
    小题2:What do we know about turtles?
    A．They don’t look after their babies.
    B．Baby turtles hate their mother.
    C．Other animals can’t eat turtle babies
    D．Turtle babies can’t take care of themselves.
    小题3:Egg shells can be used to______.
    A．make eggs more beautiful
    B．make eggs more tasty
    C．let the young animals dry
    D．protect the young animals
    小题4:The passage is probably from___________.
    A．a newspaperB．a science book
    C．a sports magazineD．a story book

    小题1:A
    小题2:A
    小题3:D
    小题4:B

    试题分析：这篇短文讲述一些产蛋动物产卵的方式及原因，以及卵宝宝的生长方式，和这些蛋壳的作用。特别介绍了乌龟产下卵宝宝后是不照顾他们的，这些宝宝要靠自己的能力生存。
    小题1:细节理解题。根据第一段第五行Animals lay many eggs because other animals may eat the babies.“动物产下许多的蛋是因为其他的动物可能会吃掉这些宝宝。”可知答案，故选A。
    小题2:细节理解题。根据第二段第三行When the babies come out of the eggs, they must find their own way to the ocean.“当龟宝宝破壳而出时，他们必须自己找到去海洋的路。”可知乌龟产下蛋时不去照顾它的宝宝，故选A。
    小题3:细节理解题。根据第三段第一句话Most eggs have an outside shell that keeps the growing animal inside safe.“大多数卵都有卵壳，是为了保护里面的动物安全生长。”故选D。
    小题4:推理判断题。这篇短文主要描述产蛋动物产蛋的原因，和这些卵的生长方式等。因此可以推断这是和科学有关的，故选B。
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