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在初中《动物学》课文中,《昆虫纲》一节的教学内容只涉及了直翅目、鳞翅目、膜翅目和双翅目的昆虫知识。通过学习,使学生初步了解动物界中昆虫的形态、特征、分类等。但我认为,这4个目的内容远远不能代表作为昆虫在动物界的特殊意义,因为昆虫种类特别多,动物界的种类为150多万种,而昆虫就占120多万种,仅此一点就说明昆虫生命力的旺盛,昆虫形体小而灵活,在形形式式的生物中占有很强的优势,决定了它种类多和分布广的特点。
In the junior school “Zoology” text, the teaching content of the section “Insects” only covers the knowledge of insects of Orthoptera, Lepidoptera, Hymenoptera and Diptera. Through learning, students can understand the morphology, characteristics and classification of insects in the animal kingdom. However, I think that these four objectives are far from being representative of the special significance of insects in the animal kingdom because there are many types of insects. There are more than 1.5 million species in the animal kingdom, and insects account for more than 1.2 million species. It shows that the vitality of insects is very strong and the insects are small and flexible. They have a strong advantage in the form and form of living organisms, and they determine its variety and distribution characteristics.