Humans and animals need oxygen to exist. Without it, most living things will die. But where does oxygen come from? Trees.

Trees can take in much carbon dioxide (二氧化碳) which may be bad for our environment and produce oxygen for us to breathe.

All people know that trees are important to us.

Scientists believe human life would be impossible if there were

no trees on Earth.

Trees are a major source (來源) of food. Apples, oranges, lemons all come from trees.

Humans and animals knew how to get food from trees many years ago.

In fact, many kinds of important medicine come from trees too. Some special things in trees can be used to produce medicine. Also, trees create more beautiful and relaxing environments.

They help protect the soil（土壤）.

1.What is the passage about?

A. Humans. B. Animals. C. Trees. D. Fruit.

2.Which of the following may damage(危害) our environment?

A. Oxygen. B. Medicine.

C. Food. D. Carbon dioxide.

3.What CANNOT people use trees to do'?

A. To produce oxygen.

B. To make food.

C. To create medicine.

D. To destroy the soil.

4.The passage mainly (主要地) wants to tell us______________.

A. trees are not important to animals

B. animals need oxygen to breathe

C. there are few trees in the world now

D. trees can help humans and animals in many ways

5.We may read this passage in a ________.

A. magazine B. travel guide

C. storybook D. newspaper

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Presents For Children’s Day

On sale!

Charles M. Schulz was born in 1922 in Minneapolis, the only child of a housewife and a barber. His father loved the funny pages and encouraged (鼓勵) his interest in comics. Charles M. Schulz sold seventeen cartoons to the Saturday Evening Post from 1948 to 1950 and Li’l Folks to the St. Paul Pioneer Press. Peanuts debuted(首次露面) on October 2, 1950, and ran without interruption(中止) for the next fifty years. Charles M. Schulz died in 2000.

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