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让杂合的高茎豌豆自交,后代中出现高茎和矮茎两种豌豆,且两者的比例大约为3：1,这种现象在遗传学上称为 遗传学巴氏小体有什么作用如果完全失活了的话为什么XO和XX不一样 How old are you?（同义句转换） How old are you?改为同义句是什么? How old are you 同义句是什么? How old are you?的同义句 They are doing their homework carefully.you'd better not----[disturb]them he was busy writing a story,olny stopping once in a while to smoke a cigarette这句为什么是伴随状语,伴随状语不应该是2个动作同时发生吗?Having suffering from heart trouble for years,professor white has to tale some medicine wit be rude about it还是be rude to it 谁知道小日本那个"how are you "说成"who are you"笑话的全文? How are you 我看不懂中国留学生在国外的高速公路出车祸了,连人带车翻下悬崖**赶到后向下喊话道：“How are you?”留学生答：“I‘m fine,thank you!And you ”然后**走了,留学生就死了.我没太听懂有 how are you? how old are you? 翻译成中文. Please translate the following sentences into English ,thank you very muchHere the white basswood grew alongside the hemlock and the bitternut hickory,and the beeches and sweet buckeyes locked arms. help me translate the following word into english.鱼上钩了,因为它爱上了渔夫,它愿意用它的生命来博得渔夫一笑. someone always does nothing but play,and says anther day comes after the day翻译,并说出这首诗所要表达的内容和中国的哪首诗很相象急~~~~~~~~~~~~~ I work all day and often get home late___ night.填介词丶谢谢 He is j___ doing his homework.求快啊,今晚要交! “How old are you?”怎么改为同义句? 为什么会有一年四季? A kind of new food will be ___ ___(出售) in this restaurant tomorrow到底是for sale 还是on sale啊? 为什么会一年四季? 为什么会有一年四季啊? 为什么会有一年四季呢? 把you need not do it now .变成被动语态． you needn't do it now改为被动语态是it mustn't be done by you now吗 You needn't do it now.改为被动语态 it by you know 英语在线发音朗读怎么听不见 英语在线拼读发音Fox example ,Children's Day 里面的 ’怎么读?拼为 C－H－I－L－D－R－E－N－?－S D－A－Y ．”读为什么?我知道读单词的时候不发音，可是拼读的时候的？我一直读为C-H-I-L-D-R-E-N 一 Who is going to see John(.)at the railway station?A.of B.off C.out D.aft i'm going to see my grandma the day after tomorrow he said改为间接引语 选择：The weater report __________it's going to rain tomorrow.A：says B：say C:said 探究蔗糖的元素组成 设计实验：我们设计了这样两个实验方案：（1）将蔗糖在空气中点燃,单独点燃蔗糖,不易燃烧,但是在蔗糖中掺入烟灰,蔗糖很容易被点燃.可见,烟灰可能在此起催化作用.