2022七年级下英语周报58答案

书面表达One possible versionDear Mr. SmithI'm Li Hua. chan writingto inform you that an English speech contest will be heldthe lecture hall next Friday and we would like to invite yoube one of the judges of the contest. The speech contestwith the theme"Stop wasting Food"is intended to arousestudents'awareness of reducing food waste and a sense ofresponsibilityWe will greatly appreciatc it if you could accept ournvitation. Looking forward to your reply.ua

命题意图】本题主要考查细胞分裂知解析】处于图1中CD段的细胞中含有2个或1个染色体组,A错误:图2所示的细胞中含同源染色体的是甲、乙和丙,B镨误;图1所示细胞分裂既可以是有丝分裂,也可以是减数分裂,所以完成后产生的子细胞为卵细胞、极体或体细胞,C错误;根据图2甲细胞发生了突变,有丝分裂产生的子细胞遗传组成有差异,D正确

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