昆虫的身体结构

昆虫的身体结构：所有昆虫都有三个身体部位（头、胸、腹），六条腿长在胸部，头上有一对触角。大多数昆虫有翅膀。它们有外骨骼，也就是一层坚硬的外壳，而不是体内的骨骼。

The insect body plan: all insects share three body parts (head, thorax, abdomen), six legs attached to the thorax, and antennae on the head. Most have wings. They have an exoskeleton — a hard outer shell — instead of bones inside.

学习证据 / Evidence

• 在示意图或真实标本上标出昆虫的三个身体部位——头、胸、腹
• 说出所有昆虫都正好有六条腿，并且这些腿长在胸部
• 解释昆虫有外骨骼，也就是坚硬的外壳，而不是体内的骨骼

• Label the three body parts of an insect — head, thorax, and abdomen — on a diagram or real specimen
• State that all insects have exactly six legs and that the legs attach to the thorax
• Explain that insects have an exoskeleton, a hard outer covering, instead of bones inside their body

评估问题 / Assessment

如果{{name}}看到一张甲虫或蚂蚁的图片，能指出头、胸、腹，并说出所有昆虫都有六条腿和坚硬的外壳吗？

If {{name}} looked at a picture of a beetle or ant, could they point out the head, thorax, and abdomen, and tell you that all insects have six legs and a hard outer shell?