2023卷行天下周测卷·英语[23新教材·ZC·英语-R-选择性必修第二册-Y](三)3答案

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15.A【命题意图】本题考查胚胎工程的相关知识。

【解题思路】卵母细胞去核的方法有显微直接去除、紫外光短时间照射、化学物质处理等方法;兔子卵母细胞质中有使大熊猫细胞核表达全能性的物质,故可用去核后的兔子卵母细胞作为受体细胞;去核的卵母细胞与供体细胞通过电刺激后融合,使供体核进入受体卵母细胞,构建成重组胚胎,融合后的重组胚胎需要用物理或化学的方法进行激活,使其完成细胞分裂和发育进程;胚胎发育过程中早期胚胎具有全能性,还未分化,囊胚期开始出现细胞分化。

四、书面表达One possible version:Dear Tom,Hardly could I restrain my excitement when I heardthat I got the first place in the speech contest.I must owe itto your assistance and guidance.It is with your patient instruction that I can make greatprogress in my pronunciation and intonation.Had it notbeen for the fact that you helped me correct my draft andpolish my words,my speech couldn't have fascinated theaudience.Apart from these,your teaching me how to showmy confidence and convey my heartfelt emotions in myspeech contributes to my success.From the bottom of myheart,I want to extend my sincere gratitude to you.Best wishes!Yours,Li Hua

B【语篇导读】本文是一篇说明文。科学家发现植物拥有一种神奇功能—听力。5.A【解析】推理判断题。根据第二段和第三段实验的结果Naturally,the first pot's seedlings grew towardsthe water.What was surprising,however,was that thesecond pot's seedlings grew towards the sealed watersupply but not the soil以及第四段“They just knew thewater was there even if the only thing to discover was thesound of it flowing inside the pipe,"Gagliano toldScientific American可知，种子会依靠听力寻找水源。故选A。6.D【解析】细节理解题。根据第四段She believesthat plants are able to use their leaves to discover soundwaves,which make tiny vibrations as they're produced可知，植物通过叶子来听声音。故选D。7.C【解析】推理判断题。作者在举Heather Goodall的例子前提到This could explain why so many peoplebelieve that singing or playing music to their plants helpsthem grow,然后用Heather Goodall的例子来验证这个论点即来证明音乐在植物生长中起作用。故选C。8.C【解析】推理判断题。根据最后一段So,does thismean we should start treating our plants like pets?.Notnecessarily,but perhaps it does mean we should givethem more respect."I would like to see plants acceptedmore as the amazing and interesting living beings,andless as just a source of human nutrition,"FatimaCvrckova,a scientist at Charles University in the CzechRepublic,told BBC News可知，Cvrckova认为植物应当被当作神奇而有趣的生物而受到尊敬。故选C。