2022初一上册英语周报12期答案

28B【解析】因为突变型雄蝇只能产生雄性子代,且Ⅱ2无突变基因,所以该突变性状由X染色体上的隐性基因控制,且该果蝇群体中不存在该突变型雌蝇;Ⅲ1的突变基因来自Ⅱ7;Ⅱ3和Ⅱ4的子代中出现突变型果蝇的概率是1/4。故选B

第四部分写作(共两节,满分35分)增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。删除:把多余的词用斜线()划掉。修改:在错的词下画一横线,并在该词下面写出修改后的词注意:1.每处错误及其修改均仅限一词2.只允许修改10处,多者(从第11处起)不计分This sweet senior has been asking for a new pup since her last dogunexpected passed away last year. According togranddaughter, me, herfally came true earlier this month, just before my mother's presentingher withAunmarked cardboard box. Upon ore box andtheadorable pup sitting inside, the grandma burst into tear. My grandma isnt theonly oneappreciated the surprise. The video of my grandma's reacthas been " arawak thousands of hearts and likes on social media. Thisremind us that no matter how old you are at, just about every human alivewoutd'love to have a lovely new puppy in the house

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