题目内容
（请给出正确答案）
A.To explain a new requirement for graduation.
B.To interest students in a community service project.
C.To discuss the problems of elementary school students.
D.To recruit elementary school teachers for a special program.
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What is the purpose of the talk？
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C．To discuss the problems of elementary school students.
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A．To explain how one state strengthened its land claims.
B．To criticize an effort to acquire additional resources.
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Why does the author mention Colonel Clark's expedition？
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What is the purpose of the email？
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