英语周报2022-2023高三外研第49期答案

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书面表达Onepossibleversion:NOTICEAsportsmeetingwillbeheldintheplaygroundofourschoolfromnextThursdaytoFridayAsyouknow,thepressureofstudyisveryheavynow,especiallyforthosesenior3.Sothepurposeofthesportsmeetingistoleteverystudentgetrelaxed,asaresultofwhichwestudentscanlivehappilyandhealthilyEveryoneiswelcometotakepartinit.Thosewhoperformexcellentlyatthesportsmeetingwillgetprizes.Butdon'ttaketheresultssoserouslybecausetakingpartismoreimportantthantheresult.Goodlucktoeveryone!

4.命题意图:本题考查平面向量的概念、向量夹角的计算,考查数学运算答案:C√3a-b解析:Cos