题型:阅读选择 题类:常考题 难易度:普通
A. Be in a Good Mood B. Don't Try to many things C. Don't Break the Signal D. Stay Focused on the Road E. Keep Your Vehicle in Good Condition F. Put Your Seat Belt On |
Trees are very important to not only people but also many animals. Here are some reasons why trees are so important.
Trees provide oxygen for every living thing. {#blank#}1{#/blank#}
Trees are like natural air filters(过滤器). Trees take in CO2 , and provide oxygen. They help clean the air. {#blank#}2{#/blank#}
{#blank#}3{#/blank#}According to a study,the temperature under a large tree can be about 3℃cooler than the surrounding temperature. So we will feel cool under the trees. Trees also protect us from noise pollution.
Trees are so important,but people on the Earth don't do enough to protect them.
{#blank#}4{#/blank#}Many forests are disappearing. The trees are used to make furniture,paper,medicine and so on.
I think we must do our best to protect trees. {#blank#}5{#/blank#}But we must cut down trees in a proper way. When we cut down one tree,we should plant more trees. In that way,there will always be trees on the Earth. If we don't protect trees,all the forests will disappear. We should never let that happen.
A. Yes,we cut down trees because we must use them. B. Trees are human's friends and they are helpful to us. C. Without trees,we won't have clean air to breathe in. D. Now some people are still cutting down too many trees. E. Without trees,our lives will be in danger. F. Trees are helpful to the temperature in the environment. |
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