一个受精卵细胞连续分裂3次后，最多可形成几个细胞

晚上临睡觉前,要对父母说：A,Good night ,B.see you ,C,Good evening 已知pI值,如何分离提取纯化鉴定某种酶 求一份蔗糖酶的提取 分离 纯化及Km值的测定的试验讨论 已知pI值为6.2,如何从肝中分离提取纯化鉴定某种酶最好有实验步骤 如何从肠道标本中分离鉴定出肠道致病菌 我养了几条小金鱼,现在想问一下多久换一次水,多久喂一次鱼食,换水前注意什么,自来水需要晒吗? 请帮忙填写世界地理各分区的名称（按序号填写） 鱼怎么喝水?不是它把水吸了进去,又吐了出来吗?那他怎么喝水? 鱼也需要喝水吗? 是不是就靠背啊 鱼喝水么?或哪些喝哪些不喝?为什么? 鱼需要喝水么? 文科生的地理历史政治是不是要背书? 鱼需要喝水吗? Give them the answer ____ that question. give me the answer 还是give me an answer 哪个正确? Sorry,I can"t tell you the answer ______ the question please give me the right answer 中,对于Mark Zuckerberg的经历,有几分真几分假?哪里是虚拟部分? answer the question right 这个说法对吗? blue 在英文里面有什么潜在含义?比如 the blue uninvited blue英语什么意思 英语里的“黄色”是BLUE?我的意思是那个黄色 淫秽 不健康的 七上英语书第126页内容 Do you know the answer to the question ,Jim?Sorry,I .Would you repeat that question?A.don't listenB.haven't listenedC.wasn't listeningD.hadn't listened () you answer the question in english?sorry,i ().() i answer it in english用could,can,may,must,needn’t填空.1.A:________ you answer the question in English?B:Sorry,I ________.________ I answer it in English?A:No,you ________.You ________ answer i 7.---Sorry ,Sir ,I can't answer the question.---Well ,you are supposed ____ this part of history.(C)A.readingB.to be readingC.to have readD.having read8.The stranger said something in a ____ voice and the little girl was very much ____ .(A)A.frighten blue除了解释成蓝色, 蓝色除了blue之外还有哪些单词?如题.蓝色除了用blue表示之外,还有那些常见的单词可以表示蓝色? there are so many wonderful toys____in the shop that little tommy can't decide withA.choose from,to choose from B.choose from,to choose C.to choose from,to choose D.to choose,to choose 用have,has或there is ,there are 的适当形式填空.My uncle ____a toy shop._____,_____many toys there. I did bably in the exam,but Li Lie did w___ and he didn't pass it.There are so many toys in the shop that I can't decide which one to c____.Her famili was so p___ that she could't go to school.