九章算术共有几个章节

they know us chinese well 和 they know our chinese well 哪个对? 1.Will they do our homework?No,they won't.2.Will they make cakes?Yes,____________.第二题要补充,并写出中文意思. 用have to,can,must 造1组句子（快,快）要求把每个句子变为否定句,一般疑问句并作回答并翻译 Would you like to play computer?在肯定回答中,I come on it.和I come to it.有什么不同. 修改病句:一想起过去的往事,他的心情就激动起来. where must the puma have come from?对过去的事进行推测,疑问句和否定句中要用can和can't.这句话中的must是不是用错了? 新概念第三册的第一课:"where must the puma have come from?第三册的第一课"where must the puma have come from? where must the puma have come from?请仿照这个句型造几个句子.请附带中文意思.. 英语翻译特别不理解must.have在句中的作用, where must the puma have come from,怎么翻译,有的说 must have done,可是come不是done的形式啊? we live in a society____ exchanging presents is an important part of communication.A.which B.where C.when Dwhy为什么不可用which而是where?society算是一个地方吗? Email,as well as telephones,______an important part in daily communication.is playinghave playedare playingplay E-mail,as well as telephones,（ ）an important part in daily communication.A.plays B.is playing选哪一个为什么?另一个为什么不选?为什么正确答案是选B？ Education is an important part of our development part of 怎么理解. It must have been they who gave the signal.为什么是they而不是them呢? 这是一部激动人心的电影. （修改病句） what is the strategy是什么意思?what is the strategy----------------do right things-------------do things right------------- What are the four common forms of market development strategy in an international environment?Explain their advantages and disadvantages. what is Marketing Mix? What is market segmentation? it is this advanced marketing strategy ,along with the other organizational achievements .it became one of the first groups to project a corporate identity,and it is this advanced marketing strategy ,along with the other organizational achievements . At school my favourit lessons are maths and science.这句话有什么错?如：单词拼写、语法错误. 昨天晚上刮了一阵狂风暴雨,修改病句 冬季在我国北方常在房中房一盆炭火,它的作用是什么用石灰浆刷墙后, 1.He came here last month. The old man has two sons,both of who are lawyers翻译 The old man has two sons,both of （ ）are working abroad.Athem,B whom The man has two sons ,both of___are doctors空格中为何用Which,而不用them.讲得好加悬赏金 The old man has two sons,____are lawyers A bothThe old man has two sons,____are lawyersA both of themB both of whom 解析下 用石灰浆刷墙,墙上附着的白色坚硬的物质.用化学式怎样表示?急用 He didn't go to the theater with his partents ,he stayed at home 同义句 this school is more than 10,000 square meters in area同义句the school _ _ _ _ _10,000square meters.