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相对而言，潮湿空气有利于空气中细小颗粒物的积聚，从而可降低舍内粉尘浓度减少呼吸道疾病。()

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What happens to LearningWare, Corporate Adrenalin, and Games2Train？

A. They are optimistic but cautious about e-learning.
B. They are successful even in the economic recession.
C. They will become profitable when the economy revives.
D. They will be provided with low-budget training programs.

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直肠憩室(名词解释)

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风向玫瑰图一般要标明每个方向的风速平均值。()

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Write a note of about 50 - 60 words based on the following situation; Jane, your classmate, helped you do your part-time job when you were sick last Sunday. Now, write her a note, expressing your gratitude and inviting her to have dinner at home. Marks will be awarded for content, organization, language and appropriateness.

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