Remember to _____the lights before you leave the classroom to save electricity.

A.turn down B.take off C.turn off D.put off

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The new invention can show us________ every day through the eyes of an animal.

A.what color is the world B.what the world looks like

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In the 13th century, Marco Polo, the world known Italian traveller, saw many wonderful things in China. One of the things he discovered was money made of paper. People in the West did not have such kind of money until the 15th century. 1.

Paper was invented by a Chinese man called Cai Lun almost 2,000 years ago. But it was not made in Europe until the year 1100. Four hundred years later, a German discovered that he could make the best paper from trees. 2.

Paper can be used in many ways. The common uses include newspapers, magazines and books. But do you know that paper can be used for keeping warm? In Finland, the farmers wear paper boots to keep their feet warm in the snow. And even houses can be insulated (使絕緣的) from heat or cold with paper.

However, we have to understand that paper still comes from trees now. 3. Every day people throw away about 2,800 tons of paper in our city. It takes 17 trees to make one ton of paper. This means that we are cutting down nearly 48,000 trees every day. The fact is that it takes more than 10 years for a tree to grow.

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In short, we should keep a balance (平衡) between using paper and protecting trees, and do it now before it is too late.

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B.If we keep on wasting so much paper, there will not be any trees left on the earth some day in the near future.

C.However, the Chinese began to use it in the 7th century.

D.So it is the right time to stop making paper from trees.

E.After that, countries rich in forests, such as Canada, Sweden, America, Finland became the most important ones in paper making.

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Some people like to be volunteers, do you want to be one? Maybe you need some ideas. Here is some advice.

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Give back during the holidays. Serve dinner to the homeless, volunteer at an Old Age Home, or give out toys to kids.

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C.Setting up a green club. D.Cleaning up the park.

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B.Volunteering at a children’s hospital is boring.

C.An after?school care centre is a place for homeless kids.

D.Old Age Home needs more volunteers than the children’s hospital.

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The two sessions in Beijing are the talk of the town in China now. The annual session of the Chinese People’s Political Consultative Conference (CPPCC, 中國人民政治協(xié)商會(huì)議) started on May 21. 1.

 Due to the COVID-19 pandemic, some arrangements (安排) for this year’s two sessions have been changed. Online communication is being fully utilized (運(yùn)用) to ensure (確保) public health, as well as smooth communication for the meetings.

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E.But this year, the officials will attend the meetings through video conferences and phone calls.

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