2022英语周报八年级上册第13期答案

范文Dear jackIve learned with delight that you won the first prize in the U.S. Midwest Chinese Bridge SpeechContest. Please accept my most sincere congratul ati ons and best wishes for a good futureI know how talented you are and how much hard work you' ve made to attain the goal. No onecould be more deserving of the success. And I'm very glad to hear that you owe your success to myhelp and want to study Chinese with me as well. I' m surely willing to give you a hand It's such aat encouragement to me to see your efforts rewarded. Im determined to learn English well, so cayou do me a favor to help me learn English?do hope you can take part in the final contest to be held in China and expect your furtherachievement. Looking forward to he aring from you soonYoursLi Hua范文Dear Jack,I have leaned with delight that you got the first prize in the U.S. Midwest Chinese BridgeSpeech Contest. I would like to extend to you my utmost congratul ations on your suc cess. You mustbe both excited and delighted. And I feel very happy for youIt is quite exciting news. I know this is surely owing to your hard work. It is a reward you richlydeserve. Having you as a friend, I really feel both proud and lucky because I can learn so much fromyou. I wish you would continue to help me with my English, and meanwhile I would be willing tohelp you with your Chinese as well. As we all know, you are a hard-working and talentedperson, which is essential for making achievements. I am sure that I can learn much from you, forwhich I wish you can teach me EnglishI hope that you can take part in the final contest to be held in China. I wish you would continueyour efforts and gain further success in the future. Your success tells me that hard work will pay offn the end. And your example is a constant inspiration to me. I will strug gle to catch up with youMy best wishes to your further success. Congratul ations againYLi Hua

34.(10分,每空2分)(1)①斐林试剂B比A的砖红色深②A比B的蓝色深A与B的蓝色深度相同(2)细胞壁【解析】(1)①检测还原糖应该用斐林试剂,砖红色越深代表还原糖含量越高。若果实甜度提高与还原糖含量增加有关,则B比A的砖红色深。⑨由题干结合淀粉遇碘变蓝可知,若假设1成立,即淀粉转化成了还原糖,A管中淀粉含量高于B管,则A比B的蓝色深:;若假设2成立,即其他物质转化成了还原糖,A管中淀粉含量等于B管,A与B的蓝色深度相同。(2)植物细胞壁具有支持和保护的作用,苹果果实在成熟过程中硬度逐渐下降,这主要与细胞中的细胞壁变化有关。

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