2021-2022学年高三核心突破·英语BSD(三)3试题答案

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第二节One possible versionThe lying lessons aent on regardless. Dad jumped off achair, waving his arms as if his life depended on it, in anattempt to encourage Nuo Nuo to shake its wings like himFunny and clumsy as my dad looked, he still tried hardhoping that NuoNuo would understand his intention. Initially, Nuo Nuo looked at him in surprise, seemingly won-dering what happened to my father and why he performedsuch strange movementsGradually, this stupid action of Dads did actuallyhave an effect. To our joy, Nuo Nuo began to shake itwings and started to rise. Everything is hard at the beginning. But the fact that NuoNuo couldnt fly at first was noreason to stop trying. At first it kept falling. Slowly itbegan to fly. After a few days of practice, Nuo Nilo man-aged to fly and it survived the winter as well

3.A【解析】本题考查余弦定理,考查运算求解能力因为BC-√17,AC=3,c0sA⊥,由余弦定理得BC=AB2+AC-2AB· ACCOS A所以AB2-2AB-8=0,所以AB=4因为c、丽以wn4=2所以S=AB·AC·smA=×:×34,23