晋中市2022届九年级阶段评估(二)2英语试题答案

晋中市2022届九年级阶段评估(二)2英语试题答案，目前我们趣对答案已经整理了晋中市2022届九年级阶段评估(二)2英语试题答案的各科答案和试卷，更多试卷答案请关注本趣对答案。

16.-16【解析】由函数y=1+2tanx+tanttan x (l-tan'x)tan r-tanx)+tanx1+tant1- Sin21+sin2x.- cos'zsin arcos zrSin 4I,1cos J根据正弦型函数的性质,可得-1≤sin4x≤1,所以函数的最大值为4,最小值为4,所以函数的最大值与最小值的积是-1

书面表达:A Meaningful Volunteer ActivitA volunteer activity was organized by our school in the railway station last weekend. The activity was de-signed to help the passengers who needed help. Meanwhile, our teachers required us to seize the chance tospread kindness. Twenty students including me actively took part in the activity and we devoted ourselves tohelping the passengers. We helped to carry luggage and led the way for them. In addition, we bought some wa-ter and food to the elderly passengers.This volunteer activity was meaningful and valuable. Through the activity, we developed a good relationship. More importantly, I learned that even a small kindness can make a big difference to others and warm uptheir hearts