回答听力第14题__________

回答听力第14题__________

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根据以下资料回答题The United States is a democracy in that __________

根据以下资料回答题The United States is a democracy in that __________.

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根据以上材料,回答第45题___________

根据以上材料,回答第45题___________

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When (heat) __________, iron can be changed into liquid.

When (heat) __________, iron can be changed into liquid.

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