填空题

By piecing together all kinds of evidence collected by various expeditions, the researchers believe the Mayas to be Indians, whose ancestors had come from Asia.

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N
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Though much remains to be discovered, by putting together various findings obtained since the 1700s, researchers have come to the conclusion that Mayan culture is quite remarkable.
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Title: A Job or Further Study说明：下表数据所示为 1997、2001、2004 年某校大学毕业生选择就业和选择参加研究生入学考试人数百分比变化情况(Remember you should quote as few figures as possible. )(1) 描述上述数据的变化情况。(2) 说明这些变化的原因。(3) 作为大学生，说说你的选择和理由。A Job or Further
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