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22.C【解析】某[文]些单倍体植株(如二[章]倍体植株的花粉形成[来]的单倍体)在进行有[自]丝分裂过程中,不存[知]在同源染色体;有丝[嘛]分裂只能发生在真核[答]细胞中,大肠杆菌为[案]原核生物,不进行有[网]丝分裂;蛙的红细胞[文]进行无丝分裂,分裂[章]过程中没有出现纺锤[来]丝和染色体的变化;[自]减数分裂过程中有非[知]同源染色体的自由组[嘛]合,而受精作用没有[答]故选C。
Writing 10Dear Jim,Knowi[案]ng that you'll take part in the "Studying inChina"speech contest. I'm writing to give you somepract[网]ical suggestio[文]ns at your requestI recommend[章] that you talk about the courses onChinese[来] tradition[自]al culture that you ve attended.[知] The majorreas[嘛]on is that they introduce[答] the real treasure in humanhist[案]ory. Besides, since you've taken the coursessy[网]stematica[文]lly, you re sure to have a deep understan[章]dingof them. To do it well I think you should chooseimp[来]ressive examples to gain the recogniti[自]on of the judges.Mo[知]reover, you have to practise your spoken Chinese teexpress[嘛] yoursIf more clearly and fluently.[答] Speaking skillsare[案] also needed, for they can help maximize theeffect[网]iveness of your speechi do hope my advice will be of some help to you. Wishyou great successou[文]rsLi h
