Frogs are experts in catching pests. Frog catches pests with its long and wide tongue. The root of the tongue grows in front of the mouth, and the tip of the tongue branches backwards, with a lot of mucus on it. As long as a small flying insect flies by, it will suddenly jump up, open its mouth, quickly stick out its long tongue and eat the pests at once.
(2) Singers
There is a bulging thing on the frog's mouth that can make a sound. It likes to sing loudly on rainy days in summer. In hot summer, frogs usually hide in the grass and occasionally make short calls. If there is a cry, the people next to them will scream a few times, as if singing to each other. Frogs are happiest after the heavy rain. At this time, there will be dozens or even hundreds of frogs croaking endlessly, and the sound can be heard for miles away.
(3) Athletes
Frogs don't jump the best in the world like copepods, but their jumping ability is also excellent. In the frog family, some smaller members can jump 10 times their length.
According to a recent study published in Journal of the Royal Society B, the secret of frog's powerful jumping ability lies in its leg muscles, which are far more flexible than mammals. Before jumping, frogs will squat down to stretch their hind leg muscles and challenge the laws of physics. This kind of stretching can make frogs produce incredible mechanical energy and strength, and finally get rid of the potential threat with an amazing leap.
(4) Camouflage master
This frog has a white belly, a yellow-green head and back, and some dark brown stripes. Some have three white marks on their backs. The reason why frogs are green is a good disguise. It is almost the same color as the grass in the grass and can protect itself from the enemy.
Extended data
Frogs can't effectively prevent the evaporation of water in their bodies because of their bare skin, so they can't live without boiling water or humid environment all their lives, and they are afraid of drought and cold. Therefore, most of them live in tropical and temperate rainy areas, and there are very few species distributed in cold zones.
When I was a child, I could only live in water. When I grow up, I can live on land. Frogs breathe with their lungs, but they can also draw oxygen from the air through wet skin. Various pigment cells in its skin will also expand or contract with the change of humidity and temperature, thus changing the depth of skin color. Frogs usually inhabit rice fields, ponds, ditches or grass by the river, sometimes they lurk in the water and usually hunt at night.
Frog is a protected animal prohibited by the state, but in daily life, many people regard frog meat as a tonic or delicious food, which leads some vendors to kill frogs on a large scale. Catching frogs will inevitably destroy the ecological balance and lead to the proliferation of pests. In order to ensure the yield of crops, people must use a lot of pesticides. Pesticides accumulate in frogs after they eat some lucky pests. People who eat too much frog meat are prone to food poisoning. This will be harmful to human health.
1, a turquoise skin, a big attractive head, a pair of big round eyes on the head, and a big mouth that can make a loud noise. This is a lively and clever little frog.
2, you are a good helper of the farmer's uncle, you are an expert in catching pests, you are a lively and lovely elf!
The little frog slept all winter. They woke up. They opened their mouths and stuck out their tongues. They ate pests for breakfast and had a hearty meal.
4. When hunting, the frog lay still on the ground. When the pest flies in front of it, it will jump up, quickly stick out its tongue and roll the pest into its mouth to eat.
5, a frog can kill at least 30 pests a day, up to more than 200. If you kill a frog, it is equivalent to killing a small guard of crops, and it is equivalent to letting thousands of pests escape and hurting crops more unscrupulously. What a pity to lose the frog as a good friend! Who will protect the crops without frogs?
6. Frog (Five Wonders) Hu? Lotus Taiwan independence sat, enlightened and cultivated spirits, and monopolized the land, and no one dared to invade.
It's raining, it's raining, and the sand is raining.
The frog said, "I want to write a poem!" " "
The tadpole swam over and said, "I want to be your comma."
The water bubble in the pond said, "I can stop now."
A string of water drops on the lotus leaf said, "We can be ellipsis."
The frog's poem is written like this: "Gung, Gung, Gung." Quack, quack, quack ... "
Frog's poetic writing shows that with everyone's help, the little frog can complete the creation of a "poem" and encourage children to cultivate the spirit of cooperation. Of course, the article is entertaining. Frogs write poems with only one word-quack, "quack, quack" is the language of little frogs.
This catchy little poem skillfully embeds several punctuation marks in the text, guiding students to know commas, periods and ellipsis through vivid things. Learning punctuation norms is interesting and suitable for children.
works appreciation
This text is a lively children's poem with five sections. The author vividly describes the scene of frogs croaking like poems in rainy days, and vividly compares tadpoles, blisters and a string of water drops to commas, periods and ellipsis in poems, which makes people think deeply.
The content of the textbook is illustrated, full of childlike interest, imagination and creativity, which is very suitable for the lively and curious first-year students to learn languages and understand things, and also leaves a broad space for teachers' creative teaching.