2022英语周报JSS高一答案

应用文写作( One possible versionDear FrankWe plan to participate in the weeklong labor practice in the school field base scheduled from August Ito 8. Im writing to invite you to Join usThe base offers free accommodations and various activities. Participants can learn to do outdoor worklike farming or gardening. The art of making tea, which interests you very much, is also taught. Whatattracts me most is that we'll learn to raise animals such as goats or rabbitsIn the practice, we can experience the value of labor and expose ourselves to a wide range of practicalskills, which will surely benefit usLooking forward to your replyYoursLiH

10.BCD【解析】线性回归直线是最能体现这组数据的变化趋势的直线,不一定经过样本数据中的点,故A不正确,C正确;由回归方程的系数可知B正确;一组数据都加上或减去同一个常数,数据的平均数有变化,方差不变(方差是反映数据的波动程度的量),故D正确.故选BCD.

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