我喜欢各种各样的植物。有一天,我在家读了一本《动植物之谜》。在那本书上,我看到了关于植物的许多有趣的知识。现在全世界约有四十万余种植物。植物虽然是一些花草树木,但它们各自有保护自己的方法和一些防御能力。北方有一种酸枣树,它长出的荆棘全部是横向对称、从下向上的 I like all kinds of plants. One day, I read a book at home, “the mystery of plants and animals.” In that book, I saw many interesting facts about plants. There are now about 400,000 species of plants around the world. Although plants are some flowers and trees, they each have their own methods of protection and some defensive capabilities. There is a jujube tree in the north, which grows thorns all horizontally symmetrical, from the bottom up