pcr引物浓度

Some people say,"We learn more outside class." Do you agree?Why or why not?怎么用英语回答 do you agree the longer you know people the more you are puzzled by them?why? sport is happy What is Share feeling is so happy ,let others happy with you it's an animal.it has a long tail.it likes climbing trees.what is it? 英语是不是每个句子中都要有am is are what is a frustrated system?在讨论蛋白质折叠时,认为有两个作用：“energetic frustration”“topological frustration”,但是“frustration”到底是什么?什么是一个“frustratde system”?random heteropolymer是一个minima what is quality system what is "monetary system" please? What is the best educational system Sharks_____some fish and other animals.a.feed eith b.feed c.feed on d.feed about Animal Husbandry And Feed Science?是什么期刊？是什么时候创刊的，是否被美国化学文摘收录？ 介词短语by bike在句中做什么成分 ____bicycle填介词 e-bike用什么介词 I am__English,so l must work harder than before.A.poor in B.poor at C.good at D.well in貌似是B,为甚莫是A every morning he goes to school on foot ()() by bike两个括号中填什么介词 there is nothing _____(剩下） I'm feeling better转化为疑问句要一般疑问句,特殊的,反正都要 I'm wery happy改成疑问句怎么写 I'm wery happy改成一般疑问句怎么写 这句话有没有问题!I work harder than he do. In the years ____ ,I will work harder.A.come B.to come C.coming D.will come 英语翻译是Dark age的Outside the inside 英语翻译most people in China think that Peking Duck is the capital's most famous dish .it is now served at restaurants around the world.The history of Peking Duck dates back to the Qing dynasty.It's said that Peking Duck was Emperor Qian Long's f turn down the musicmusic 不可数为什么前面有the? i had appreciate 填空if you could turn the music down a bitAit Byou Cso Dthat the music is good but i am afraid it is too noisy.could you please turn it down?a.i'd love tob.i hope soc.i'm glad you like itd.i'm sorry about that应该选D,为什么 There is nothing neither bad or good but thinking make it to do so"怎么还可以make sth to do了?不是省略了to 的不定式吗? 有easy to do sth这个短语吗 it is easy to do sth.跟it easy to do sth.这两个谁对?还是都是对的?还有为什么是I found it easy to learn English.而不是I found it is easy to learn English.