2. Who can swim, so can fish. How do fish swim? Wag your tail and nod your head.
Understand and use words, and make sentences with fluent words, complete meanings and strict logic according to certain syntactic rules. According to the characteristics of modern Chinese, it can be extended to the basis of paragraph writing and composition, which is the basic skill for students to write a good composition. Chinese course education and teaching is one of the content of Chinese practice, examination questions and operation methods in primary schools.
Extended data:
As the most complex group in invertebrates, arthropods, insects and animals, its geographical distribution and geographical division is an important branch of biogeography, for which Mr. Ma Shijun has done outstanding pioneering work. Among all living things, the group with the largest number of species is the most prosperous animal in the world, with more than 6.5438+0000 species found.
Its basic characteristics are head, chest and abdomen, two pairs of wings and three pairs of feet; 1 The pair of antennae are born in the head and the bones are wrapped in the body; Life forms have changed a lot, all over the world. Insects are different in structure from vertebrates. Their bodies are not supported by endoskeleton, but covered with a shell made of chitin.
This shell will be segmented to facilitate movement, just like the knight's armor. Insects play an important role in the ecological circle. Insect-borne flowers need the help of insects to spread pollen. Honey collected by bees is also one of people's favorite foods.