A. weigh B. wood C. forest D.build E.provide |
Trees are the tallest living plants. Redwood trees can grow as tall as a 30-storey building. Giant sequoias(红杉) can as much as 3,000 large pickup trucks, making them the top heaviest living things. Trees also live for a long time. Many trees today were full-grown long before the United States became a country. Animals can't live without them because trees food and homes for them.
Trees do many things as well. Tree leaves shade(遮阳) us on sunny days. People around the world take good care of trees. People in some countries even cook food with . However, some of them are in danger because we cut down too many of them. We need them to our houses and make paper. Without trees, some places may suffer from(遭受) sand storm.
