单词：the relative acid content of the soil
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Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J
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relative A husband and wife were driving down the road arguing with each other. They passed a pig farm and the husband said, Are they relatives of yours? Yes， she replied, I married into the family. Notes: 1. A husband and wife were driving down th
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How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t
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Relative Pronouns In this weeks episode of Everyday Grammar, we are going to discuss the relative pronouns who, that and which. A relative pronoun relates to the noun it is describing. Relative pronouns introduce a relative clause. Think of relative
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