2022八年级上英语周报14期答案

【参考范文】One day, Spotty returned from his daily walk with a broken leg. Appearing exhausted, he came to myroom and sat near me, the leg bleeding. I called my mother and she quickly tied a bandage around his leg andgave him food to eat. I was very upset. But the next day, Spotty followed me wherever I went happily asusual though he limped a bit. After this incident my relation with Spotty became more intense. I reallyadmired him a lot for his courageAlmost a year later, one midnight we heard Spotty barking breathlessly. We rushed out and saw himbarking continuously, heading somewhere. After some time Spotty became quiet. I patted him on his backand came inside. The next morning, my heart skipped a beat when I didn't see Spotty. I searched for him ineach and every corner but in vain. And this time he had gone and would never come back. I cried and waitedfor him. But there were no signs of him and I only say him looking at me with his sparking eyes in my dream

18.(1)恰有1人完成任务的概率为3×2×4×4+3×2×4(4分)-x-X3×(2)依题意,X的可能取值为0,1,2,3,42×1×3×3=3(5分)P(x=0)=3×2×44-16P(X=1)=32“mP(x=2)-3×××+3××x×+3×了×+×2××4+言××4×4+3×2×4×4P(x=3)3×2×2+1×1×3×2+了2+x-+一X(8分)P(X=4)=3×2×4×4-96分故X的分布列为X02)故E(X)=0×16+1×+2×+3×+4×96-3

以上就是2022八年级上英语周报14期答案，更多英语周报答案请关注本网站。