How many()are there in your classroom?(desk)

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• 英语：be away from get back to sp come back to sp return to sp by the lake leave sp leave for sp leave sth at/in I have a toothache（该同义句） -------------------------------------------------- How many teachers are there in your school?About two __________________________数学：小明在公路上行走 速度是每小时6km 一辆车身长20m的汽车从背后驶来 并从小明身旁驶过 驶过小明身旁的时间为1.5s 则汽车的速度是?（写出过程及说明道理）
• 英语填空 连词成句 选词填空1.用所给的词,选择其恰当的形式填空.A.have B.has C.there is D.there are 1.( )a postman at the door 2.( )many flowers on the fridge 3.can i( )a cup of tea I,m thirsty 4.A table( )four legs.Four tables( )sixteen legs.5.—How many erasers( )in your pencil-box?—Only one.6.Excuse me( )a toilet near here Yes,next to the bank.7.Our classroom( )eight windows.2.连词成句 1.want,join,i,to,sports,the ,club 2.at,keeping,good,i,m,goal 3.have,hot dogs,for,we,lunch,and,sausa
• 完成对话.在对话空格中填上适当的单词,使对话完整正确.一空一词.（含缩写词）Millie:Can you tell me about your job,Mr.Friend?Mr.Friend:Yes,course.Many students write to me andask me how to solve their 1 .I always give them my 2 and tell them what to do.Millie:What problems do most students have?Mr.Friend:Many can’t 3 when to work and play.In fact,they just needto learn 4 to make a balance 5 study and play.Millie:I 6 .Sometimes,I just get too 7 homework and I really don’t know what to dofir
• choose the right pro noun to fill in each of the blankschoose the right pro noun to fill in each of the blanks______(Our,We,Ours)classroom is big.The woman is_____(her,she,he)mother.This is_____(you,your)book.These are_____(their,them,they)desks.______(This,These)is my friend_____(His,Him,He).Are_____(these,this)your pictures?I think______(it,they)is an old car.This is my desk._____(yours,your)is over there.He is a friend of_____(my,mine).This is a do
• 用所给的句子适当形式填空,补充句子1、Gary ____(be) from the United States2、My borther is on the ___(boy) swimming team of his school.3、Chinese students usually spend(花费) six years in the ____（primary）shool.4、How many Young ____(pioneer) are there in your class?5、One of the ____(boy) in my class in the capital of the school football team.
• How many students have been to the county in your class?---there are only a few,if_____a/muchb/somec/anyd/many选哪个、为什么?
• （ ）a year do you go swimming with your friend?（ ）a year do you go swimming with your friend?-----Once a month A How often B How long C How soon D How many times 请选择并说明理由.
• how many new trees ________(plant)this year by the students of your school要说明原因 are planted have been planted 里选一个正确的
• 改错题1.jim have a dictatorary.do you have one?2.kate has an apple.what does you have 3...改错题1.jim have a dictatorary.do you have one?2.kate has an apple.what does you have 3.what are they doing?they is eating?4.l have many money in my pocket.5.my schoolbag is new.how about your.6.where is tom?he is in a books store.
• How many bottles of water____(be)there on the desk?There___(be)one.
• How many windows are there in your classroom?的答语
• 设A,B均为有m行的矩阵,证明：max{R(A),R(B)}