题目内容：

World Environment Day is on June 5th every year in the world．It makes people realize the problems of our earth．From June 5th to 16th of 1972，the UN had a meeting in the capital（首都）of Sweden（瑞典）-Stockholm． This was the first meeting to study how to protect the environment．We have only one earth， so everyone should do something to protect our earth．We should try to do the 3Rs every day-reduce（减少），reuse and recycle（循环）．We should buy things without lots of packaging（包装）．Use many things in our neighborhood-They don't have to travel very far and so they can reduce pollution．Recycle all the things you use．Carry reusable bag for shopping．

At home，we should try to save water and electricity every day．When we go out， we'd better walk，ride bikes or take a bus．Try to plant more trees and use less paper to protect the forests on the earth．And we should see every day as World Environment Day and try to do anything to help our environment．

根据短文内容，完成下列小题．

1.When is World Environment Day？

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2.When and where was the first environment meeting held？

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3.What are the 3Rs？

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4.Why should we use many things in our neighborhood？

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5.How can we protect the environment at home？

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