2022 九年级上册英语周报外研版答案

6.Ax∈[0,4],则x2≤16,“x2-2a-8≤0”为真命题的充要条件是“a≥4”.故满足充分不必要条件的a的取值范围是区间[4,+∞)的真子集

【写作指导】生题语人与自我一一校园生活一一追寻红色足进写作思路活动目的(适当扩展)养爱国精神等写作内等蜘物垂幸平期待积极参与等【佳作展台】with the aim of helping us students release theressure of study and heightening our patrioticawareness, our school has decided to organize aspecial hiking themed withFootprint"(过去分词作后置定语) this saturdayAs we all know(非限制性定语从句), hikingcan be a little tiring, so we should wear comfortableand shoes. In addition, during the hikifollow our teachers'orders to make sure of oursafety. Last but not least, bring a notebook todown what we will see(宾语从句) in case ofwriting task.Following the red footprint by hiking will surelybe an unforgettable and educational experience. Don'thesitate to participate, and we'll have a wonderfultime together(祈使句+and+陈述句)

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