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题型:单选题 题类:模拟题 难易度:普通

江苏省南京市玄武区2020年中考英语二模试卷

People used to think that wearing masks was only necessary for special groups of people such as medical workers, but now they are coming to realize that it can provide          from virus and sickness.
A、preparation B、presentation C、pollution D、protection
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