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北京市延庆区2022-2023学年第一学期期末试卷英语试卷答案

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31.By writing the text, the author intends to tell us that .____A.birds compete with eachother for nestsB.birds'living environment faces great risksC.birds may scare off competitors with a trickD.birds'feathers can guarantee their nests safety

10.What is the author's attitude towards making money by delivering meals?A.Positive. B.Definite.C.Uncertain. D.Confident.