全国100所名校最新高考冲刺卷英语2023届Y1-2024届全国大联考答案网

全国100所名校最新高考冲刺卷英语2023届Y1正在持续更新，目前2024届全国大联考答案网为大家整理了相关试题及答案，供大家查缺补漏，高效提升成绩。

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Most bacteria are not harmful.But some are pathogens that make people sick.Bacteria cause some mild illnesses. But they can also cause serious diseases.Many bacterial infections can be treated with antibiotics(抗生素).These medicines kill the bacteria or stop them from multiplying.Vaccines can also help protect against serious bacterial infections,such as colds. Bacteria play countless roles in the environment and beyond as well.Some bacteria in soil break down dead plants and ani mals.This helps recycle nutrients so other organisms can use them.Bacteria at the bottom of the ocean gobble up the green house gas-methane before it can enter the atmosphere.Many industries also rely on bacteria.Food manufacturers, for instance,use bacteria to convert milk into products like cheese

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