2022 英语周报 高一 课标 5zjz答案

15参考答案2(9°◎考查目标本题考查了向量的运算以及求夹角大小问题,意在考查考生的数学运算和逻辑推理素养◎思路点拨由2c2-c·(2a+b)-a·b=0得2c2-2a·c+a·b-b·c=0,即(c-a)·(2c-b)=0,所以(c-a)·(c-2)=0.则(c-a)1(c-2),所以夹角为

短文改错(共10小题;每小题1分,满分10分)Early in the morning, we cycled to our destination and reached in the big sign of the activity, what stood outwhichEnglish startedin the front, we listened carefully because it maewbefore speech about how Aleanagainst the green environment in the park. Hardly had we entered the park thatabeneficial to your English study. AfterSeated/ Sittingthat, we went to the free-talking area and chatted with different foreigners separate. A bit difficult as it was once in aseparatelywhile, I tried my best to use gestures and expression to make myself understand, With our minds filled with wonderfulunderstoodmemories, we go home with great satisfactionwent

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