2022名校学术联盟押题卷文综B九答案

2022名校学术联盟押题卷文综B九答案，目前我们已经整理了2022名校学术联盟押题卷文综B九答案的各科答案和试卷，更多智慧上进请关注本网站。

oo.answenng o9.to make /0.owners短文改错：Dear Mr.Wang,I'ma Li Hua,a Senior 3 of student.I'm sorry to disturb you,but I have to ask you a favor in the hope you will be so kind tothathelp me.Ever since last month,my mother hadn't allowed me to sud thehasn'tInternet.In her opinion,it is the waste of time surfing the Intemetaand also affects my study.However,I don't agree with him.With theherInternet,I can easily find the informations I need.I can compareinformahonnotes with my classmates whenmet_with problems in町stu中.meetingAlso I can share something that worry me with my friends,whichwomesreduces my stress.Faced with my mother's attitude,how should Iwhatdo?I real need your help!reallyYours,Li Hua参考范文

27.B【解析】由题意可知水稻的抗旱性(A)和多颗粒(B)的遗传遵循基因的自由组合定律。因此,对测交结果中每一对相对性状可进行单独分析,抗早:敏感-2:1,多颗粒:少颗粒=1:1,则抗旱、多颗粒植株产生的配子中A:a=2:1,B:b=1:1,让这些植株相互授粉,敏感(aa)占(1/3)2=1/9,抗旱占8/9,少颗粒(bb)占1/4,多颗粒占3/4;根据基因的自由组合定律,后代性状分离比为(8:1)(3:1)=24:8:3:1,B正确