百师联盟2022历史 答案

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第二节书面表达Dear Henry,Im Li Hua from your English speaking class lastterm. I m writing to ask for your helpNow I am preparing to attend MUN next weckHowever,have some difficulty with concepts andexpressions of the current affairs and speech skills. Iwonder if I can borrow your Dictionary of englishMedia. which you presented in class. Furthermore.I amnot quite sure about how to make a convincing andpersuasive speech at MUN. Could you be so kind as to giveme some advice?I know you have a very busy schedule, but I'd be verygrateful if you could spare some time to give me face-to-acc instructions. Thank you for your kindnessI'm looking forward to your replyYoursLi Hua

21.【答案】C【解析】孟德尔用高茎豌豆与矮茎豌豆进行正反交实验,子代都是高茎,该过程为观察现象,A正确;子代为什么都是高茎,子二代为什么出现性状分离,属于提出问题,B正确:生物体形成配子时,成对的遗传因子分离,属于假说内容,孟德尔没有提出基因一词,C错误;用子一代的豌豆与矮茎豌豆进行杂交,属于实验的验证阶段,D正确