题目内容：
Passage Two.听材料，回答下列问题。 A．To learn the chemical elements in the Ice Age for the last ten thousand years．
B．To learn the parem of solar wind activity for the last ten thousand years．
C．To learn the composition of different trees for the last ten thousand years．
D．To learn what’s being happening on the sun’s surface for the last ten thousand years．
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