时间：2020-05-27 点击：1035次
1.
what is this
Nutrition
Baize is going to build a food castle in his stomach. Food castle is so beautiful!
Grains and tubers are very important in the food castle! Do you like bread?
There are many vegetables. The red, the purple and the green...
Do you like Fish？Yes！ Do you like Meat？ Yes！ Do you like Egg？ Yes！ Do you like Bean？Yes！
Apple, watermelon, banana, orange... Which one do you like? They are all delicious!
There is a white avenue in the castle, which is paved with milk, yogurt and cheese...
What a beautiful food castle! Children, you should all build such a beautiful castle in your stomach every day!
Key words:
castle
grean
tuber
fish
meat
egg
bean
vegetable
fruit
milk
2.
Ant
Ants have two antennae and six legs. They can talk and smell with their antennae. Ants are a kind of very intelligent insect.
Great! Ants are great weightlifters. Boys and girls, can you lift a car?
Ants use their antennae to find their way home. Ants take food home!
The ant nest is like a castle. There are tens of thousands of ants in it. There is a queen in each ant nest. The worker ants are responsible for taking care of babies, finding food and digging holes. The soldier ants will fight with the enemy.
Key words:
Ant
Antenna
Foot
Nest
Queen
3.
Antarctica
Antarctica is the southernmost part of the earth, which is covered by a huge "ice hat".
Penguins are a representative species in Antarctica. They can live in freezing temperatures of - 60 ℃. Penguins are flightless birds. They walk clumsily on land. But they are good swimmers in the sea.
Bai Ze arrived at the South Pole on a research ship. China has built five scientific research stations in Antarctica, where the researchers work hard.
Antarctica, which is covered by ice, is very dangerous with deep ice cracks and ice storm.
Bai Ze reached the South Pole. There is only one direction: North. The sun rises and falls only once a year. Half the year is full of daytime , which is called polar day; the other half is all night, called polar night.
There are beautiful fireworks in the sky! This is the aurora.
Bai Ze built a penguin research station in Antarctica to protect the ecology of Antarctica. Boys and girls, come on!
Key words:
Antarctica
Pengiun
Ice storm
Pole
aurora
4.
Desert
Bai Ze and his good friend “cactus” are going on a journey across the desert. One third of the earth's land is desert, which is very dry!
Camels are the best means of transportation in the desert. A camel can drink 150 bottles of water at a time without eating for a month!
Desert plants are very special, with long roots and small leaves. Cactus is the most typical plant in the desert. It likes sunshine and needs little water.
There is a magical place in the desert called oasis. There are green plants and water. That is great!
The most terrible thing in the desert is to encounter a sandstorm. When the sandstorm comes, you must hide in a low place.
What an exciting journey to desert for Bai Ze!
Key words:
Desert
Camel
Cactus
Root
Leaf
Sand atorm
5.
Lift & Escalator
The lift is like a big box, carrying people and goods up and down in the tall building.
The escalator has a long body, which can transfer many people without stopping.
when the elevator fails, you can press the emergency button to call for help. The escalator also has an emergency button that stops the escalator.
Children should be careful when taking an escalator: first, they should be accompanied by adults, Yes! Second, do not stop at the entrance of the escalator, Yes! Third, you can't step on the yellow line of stairs, Yes! Fourth, no touching the brush beside, No! Fifth, children can't play on the escalator, Yes! What a pity! Bai Ze made a mistake.
Children should watch out when taking a lift: first, do not touch the lift door, Yes! Second, enter the lift and stand in one position, Yes! Third, do not press the lift button at will, Yes! Fourth, don't jump in the lift, Yes! Fifth, get out of the lift quickly, Yes! Excellent! Bai Ze is all right.
Key words:
Lift
Escalator
Emergency
Safey
6.
Rocket
5, 4, 3, 2, 1... Fire! The rocket takes off! Rockets are unmanned aerial vehicles with fuel. There are many kinds of rockets...
A rocket can fly fast because of the reacting force principle. You can try the reacting force with a balloon.
The rocket sent China Chang'e 4 probe to the moon! Hello! Moon!
The carrier rocket has four systems: structure system, power system, control system and measurement system.
The multistage rocket is dropped section by section in flight, and finally the satellite is put into orbit. How amazing it is!
The speed of the rocket is very fast, it can fly from the earth, to the moon, Mars, even out of the solar system.
Key words:
Rocket
Reacting force
System
Multistage rocket
Speed
7.
Space station
The space station, like a house in space, has many astronauts working in it at the same time. The space station is very, very far from the earth.
The space station has a huge wing, which is a solar panel. It can convert sunlight into electricity for the space station.
The space station has a huge hand, which is called a mechanical arm. It can lift heavy things or send astronauts to space. It caught Bai Ze, watch out!
The airlock is the place for astronauts to enter and leave the space station. Now, Bai Ze enters the space station through the airlock.
In the space station, astronauts have places to work, eat, sleep and rest. Because of weightlessness, you need to sleep in a sleeping bag in the space station to avoid floating away. The space station can see 16 sunrises and sunsets a day; you will eat small packaged food in the space station.
This is the cupola of the space station. Looking at the earth from here, it's very spectacular and beautiful! Hello, earth!
Key words:
Space station
Solar panels
Robotic arm
Airlock cabin
Dome
8.
Dinosaurs
About 230 million years ago, dinosaurs dominated the earth. There were many kinds of dinosaurs. Let's get to know about them.
This kind of small dinosaur is called Eoraptor. It is the earliest dinosaur on the earth.
Oviraptor doesn't steal eggs, and it takes care of its own eggs carefully.
Diplodocus is the longest dinosaur we have known. It has a huge appetite and can eat 500 kg of leaves a day.
The two fighting dinosaurs are Triceratops with three horns on their heads.
There are four thorns on the tail of the stegosaurus, just like four swords. Stegosaurus 's brain is very small, only as big as a walnut.
Maiasaura is very friendly and loves her babies very much. She has to take care of the little dinosaur for a long time.
This is a fierce Tyrannosaurus Rex. It's as tall as a double-decker bus. Its teeth are very strong and hard!
Giraffatitan’s neck is like a slide. Bai Ze likes playing with it best.
About 65 million years ago, an asteroid hit the earth, the earth's climate became very intolerable, so the dinosaurs died out.
Although dinosaurs are extinct, dinosaur fossils reveal the secrets of dinosaurs.
Key words:
Dinosaur
Fossil
9. Ocean
Seen from the air, most of the earth is covered by blue ocean. The ocean is very big, and very deep!
A place in the ocean with a depth of no more than 200 meters is called a neritic zone. There are beautiful coral reefs, anemones like flowers, cute clownfish, friendly dolphins, fierce and terrible sharks. Bai Ze! Run!
The giant blue whale is the largest animal on earth, and the water column it blows out is three stories high.
Bai Ze bid farewell to the blue whale and met a sperm whale. Sperm whales like eating giant squid best.
There are shipwreck treasures in the deep sea, as well as strange flying elephants and some shining fish.
This is the Mariana Trench, the deepest place in the ocean. People know very little about it now...
Key words:
ocean
