Đọc đoạn văn và trả lời câu hỏi

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IV.Đọc đoạn văn và trả lời câu hỏi
We send young people of different nationalities on expeditions around the world.
Our volunteers get the chance to work with local people to learn about different
cultures. There are ten expeditions every year. Each expedition lasts for ten weeks
and takes 150 volunteers. They go to countries such as Chile, Namibia, Mongolia
and Viet Nam. Some of our volunteers work with local people to provide facilities,
for example, building schools. Others work in national parks or help scientists to do
environmental research. These adventurous, young people come from all over the
world. To become a volunteer, you have to be between 17 and 25; you have to speak
some English and you also have to be enthusiastic, flexible and hard-working
members of a team.
1. Do we send old people of different nationalities on the expeditions around the
world ?
2. Who do our volunteers get the chance to work with ?
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3. Does each expedition last for three or five weeks ?
4. What do the volunteers help scientists ?
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5. Do you have to be between 17and 25 to become a volunteer ?