太阳系(Solar System)是由太阳、9颗大行星、66颗卫星以及无数的小行星、彗星及陨星组成的。 行星由太阳起往外的顺序是:水星(Mercury)、金星(Venus)、地球(Earth)、火星(Mars)、木星(Jupiter)、土星(Saturn)、天王星(Uranus)、海王星(Neptune)和冥王星(Pluto).
This is our planet, Earth. It is one of nine planets that travel around our sun. Earth is the only planet where life exists. It is the third planet from the sun. Mercury is the closest planet to the sun. The second closest planet to the sun is Venus.
Our planet is ninety-three million miles from the sun. The sun gives us the energy that we need. The sun, which gives us heat and light, is very important to us all. Without it, there would be no life on earth. If we were closer to the sun, it would be too hot for us. Our planet would burn. If we were farther from the sun, it would be too cold for us. Our planet would freeze. As you can see, the balance of nature is very important. In nature, small changes can make big differences.
Q: 1. Where do we get the energy that we need?
2. How many planets are farther away from the sun than Earth?
3. How many planets are closer to the sun than the Earth?
4. How many planets are there?
---Altogether there are nine planets.
5. Without the sun, would there be life on earth?
6. What would Earth be like if we were farther the from the sun?
---If we were farther from the sun, it would be too cold for us. Our planet would freeze.
7. If we were closer to the sun, would it be hotter or colder?
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