So molecules like this ended up on Earth. In fact, what we call meteorites are pieces broken away from comets and asteroids that came in our atmosphere and left their extra-terrestrial organic matter on the surface of primitive Earth.这样的分子最终来到了地球上。事实上，我们所说的陨石是来自彗星...
Juice and mlkhke() are liquds. Can you think of other kndsliqds?Gases The steam(水 ) is a kind of gas. The air th a you teis a mre of ga. We cn't usully see a gas hut sometumes we can feel it when it moves. On a windy day, we can feel the wind un our bodies.Do ...
It brings food to all parts of our bodies and takes waste away from them. All parts of our bodies are made of cells. These cells are very small. They all need all the time. No one could make pictures of cells because no one could see them.What makes the blood move round the bod...
This suggests that our Solar System isn't a typical planetary system, but a relatively rare one. When we look at planets around other stars, we see that planets of a similar mass to Jupiter are found in Earth's spot.这表明，我们的太阳系不是一个典型的行星系，而是一个相对罕见的行星系。...
All parts of our bodies are made of cells (细胞). These cells are very small. They all need food all the time. No one had seen cells before the invention ofmicroscope. No one could make pictures of cells because no one could see them. ...
The AI coffee shop has attracted many people 31 want to experience robot services, and some joked that coffee made there had the 32 of intelligence. The robot can also communicate with customers and express 33 if their services are praised.“Artificial Intelligence is being used in 34 fields ...
“Our students are not only from China but also from foreign countries. So far, more than 1,000 students have (9)___ their training. Now many of them work in lamian noodle restaurants in foreign countries,” said Liang Shunjian. Lamian ...
but if you know yourself nothing goes. The West tends to practice only what we call cultural asanas that focus on the external. We don't practice asanas just to become fit. Indian yogis have discovered 8.4 million such postures. It is essential to train our bodies to find the most comfort...
Food is the fuel our bodies need. Food keeps us alive. It gives us the energy we need to grow, move, and do many other things. The same thing is true for caterpillars, wrens, hawks—for all animals. All must find or catch the ...
We use chemistry every day, even if we don’t realize it. When you bake cookies, chemistry changes the ingredients in the oven. Soap cleans your hands because of chemistry. Even brushing your teeth is a chemical reaction. Chemistry helps with cooking, cleaning, and keeping our bodies healthy...