一 ______. They often use them to play games instead.
Animals are helpful. And animals are very important part of the world. October 4 is World Animal Day. This is a great chance to celebrate our lovely (friend).
They help keep nature on the right track. For example, bees move pollen (花粉) and seeds among plants. If they don't do so, things may stop (grow), and we would have no food eat.
Animals can also tell (we) about our past. Studies on monkeys show us human evolution (进化).
We also keep animals pets. They give us support (支持) and make us happy. So we (not) get lonely.
We need animals in our (life), and we can't live (with) them. So always show respect (尊敬) and love (to) them.
—Because he is funny. ________ interesting ________ with him.
In most parts of the world, many students help their schools make less pollution. They join "environment clubs". In an environment club, people work together to make our environment clean.
●No-garbage lunches. How much do you throw away after lunch? Environment clubs ask students to bring their lunches in bags that can be used again. Every week they will choose the classes that make the least garbage and report them to the whole school!
●No-car day. On the no-car day, nobody comes to school by car—not the students or not the teachers! Cars give pollution to the air, so remember:
Walk, jump, bike or run.
Use your legs! It's lots of fun!
●Turn off the water! Did you know that some toilets can waste twenty to forty liters (升) of water an hour? In a year that would fill a small river! In environment clubs, students mend those broken toilets.
We love our environment. Let's work together to make it clean.
We all live on Earth and enjoy our life every day, but you may not be aware of all the fun and interesting facts about the Earth.
The Earth is not round. Do you think the Earth is round? Wrong! Well, it is not completely round.
The Earth is really old. Grandma and Grandpa are old, but the Earth is much older. Scientists think that the Earth is about 4. 5 to 5 billion (十亿) years old.
Much of the Earth is water. About 70% of the Earth is water, and only about 30% of the Earth is land.
Earthquakes happen all the time. Do you know that the Earth has earthquakes all the time? But most of the time, the earthquakes are very small and humans cannot even feel them.
Mount Qomolangma is the highest mountain. There are many mountains on Earth, but Mount Qomolangma is the highest mountain on Earth.
There are so many interesting and fun facts about the Earth, Be sure to check out the sources and see how much you can learn about our awesome (令人惊叹的) planet—the Earth!
—We must stop ________ down the trees.
