2022英语周报489期答案

第一节查名词性从句。分析句子结构可知,该空引导宾语从句;另外从句中缺少宾语,故填关系代词wheOne possible versionA Classic Chinese Poem Recitation Contest for the International StudentsReciting Chinese poetry is difficult for most of the foreign students. But for those that took part in theClassic Chinese Poem Recitation Contest last week, it's not. Instead, it was just a way for them to feel thebeauty of Chinese poetry.Last week, about 20 international students in our school came together to recite some of the classic Chinesepoems. After 3 rounds of hard competition, Peter, a 16-year-old Canadian boy, won first place due to hisexcellent performance. He read a famous poem, Invitation to Wine, written by Li Bai. Many participants saidthe contest helped them to know more about Chinese poetry and culture.

苯乙酸(2分)3(2分(2)取代反应(1分)定条件只,OCH个四出OCHHCC1o(2分1)OHCCH, C2 CHOHOOCCH CH COOHClOCCH, CH定条件4分,答案合理即可)【解析】根据A的分子式以及H的结构简式可判断A是甲苯,A和氯气发生甲基上的取代反应生成的B为>CH:C,根据C的分子式可判断B发生取代反应生成的C为《CHCN,C水解生威的D为CH COOH、D发生已知信息反应生成的E为(>CHCO、E和F发生已知信患反应生成G,G和甲醇发生酯化反应生成H,根据H的结式了加(的结构简式为的结构简式为应中料强只,0101c0b的学种为乙数的地关H,G中含氧官能团共3种,即醚键、羧基和酰胺基种,即醚键、羧基和酰胺基(2)B→C是一C被CN取代,反应类型是取代反应;F含有羧基和氨基,在一定条件下可以发生缩聚反应,反应的HOO、NH化学方程式为定条件(3)由题意可知E的同分异构体中,含有苯环和醛基,如果苯环上只有1个取代基,应该是 CHCICHO,如果含有2个取代基,可以是一Cl和 CHE CHO或一CH2C和一CHO,均有邻、间、对3种结构,如果含有3个取代基应该是一Cl、CH3、CHO,有10种结构,共计17种;其中含有手性碳原子的同分异构体的结构简式为∥- CHCICHO(4)根据逆推法结合已知信息以NH2和 OHCCH2CH2CHO为原料制备)的合成路线为OHCCH, CH, CHO-.HOOCCH, CH, COOH--CIOCCH2 CH: COCISOCI定条件

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