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DNA 双螺旋结构有些什么基本特点?这些特点能解释哪些最重要的生命现象?
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举一反三
【判断题】躯干骨包括椎骨、骶骨、尾骨、胸骨及肋,它们分别参与脊柱、胸廓及骨盆
A.
正确
B.
错误
【多选题】根据《合同法》规定,下列各项中,可以成为合同标的的有< )。
A.
建设工程
B.
专利使用权
C.
代理行为
D.
有价证券
【多选题】根据《合同法》规定,下列各项中,可以成为合同标的的有( )。
A.
建设工程
B.
专利使用权
C.
保管行为
D.
有价证券
【单选题】国共十年对峙时期,以毛泽东为代表的中国共产党人之所以能开创出以农村包围城市的中国革命道路,其主要原因是( )。
A.
总结了大革命失败的教训
B.
进攻长沙遭到严重挫折
C.
井冈山具备开创根据地的良好条件
D.
我国的国情和当时形势
【单选题】To be able to catch up with the other students, he needs ___ hard work; he needs your encouragement, too.
A.
other than
B.
rather than
C.
less than
D.
more than
【单选题】is also needed to know what possible work will be most applicable to your character, needs, interests, skills, abilities, strengths and weakness.
A.
Self-assessment
B.
Self-reliance
C.
Self –esteem
【多选题】How to Use a Library A)You’re driving your car home from work or sch001.And something goes wron9.The engine stalls out at lights , holds back as you go to pass.It needs a tune up and soon.Where do you...
A.
B.
Guthrie’s The Big Sky , Carl Van Doren’s Benjamin Franklin , Mari Sandoz’s.Old Jules , and Norman Mailer’s The Naked and the Dead. F) How do you find these or any other books you’re looking for? It’s easy—with the card catalog. Every time I go to the library——and I go more than once a week——I invariably make a beeline to the card catalog before anything else.It’s the nucleus of any public library.The card catalog lists every book in the library by : 1.author;2.title;3.subject.Let’s pick an interesting subject to look up.I have always been fascinated by astronomy.You’ll be surprised at the wealth of material you will find under “a strong my” to draw upon.And the absorbing books you didn’t know existed on it. CAUTION : Always have a pencil and paper when you use the card cata log . G) Once you jot down the numbers of the books you are interested in , you are ready to find them on the shelves.Libraries call the shelves “the stacks”.In many smaller libraries , which you’ll be using , the stacks will be open for you to browse.To me there is a special thrill in tracking down the books I want in the stacks !For invariably,I find books about which I knew nothin g , and these often turn out to be the very ones l need.You will find the same thing happening to you when you start to browse in the stacks.“A learned mind is the end product of browsing.” CAUTION : If you take a book from the stack s to your work desk , do not try to return it to its proper place.That’s work for the experts.If you replace it incorrectly, the next seeker won’t be able to find it. H)Some of the brightest and best.informed men and women in America are the librarians who specialize in providing reference help.Introduce yourself State your problem.And be amazed at how much he p you will receive.CAUTION : Don’t waste the time of this expert by asking silly questions you ought to solve yourself.Save the reference librarian for the really big ones. I) You shot : you also learn to use the Reader's Guide to Periodical Literature.This green—bound index is me of the most useful items in any library.It indexes all the articles in the major magazines , including newspaper magazine supplements.Thus it provides a guide to the very latest expert information of any subject that interests you.So if you want to do a really first—class job , find out which magazines your library subscribes to , then consult the Reader's Guide and track down recent articles on your subject.When you use this wonderful tool effectively, you show the mark of a real scholar. J) Since you can take most books home , but not magazines , take full notes when using the latter. Many libraries today provide a reprographic machine that can quickly copy pages you need from magazines and books.Ask about it : If you are working on a project of some size which will require repeated library visits , keep a small notebook in which you record the identification numbers of the books you will be using frequently.This will save you valuable time , because you won’t have to consult the card catalog or search aimlessly through the stacks each time you visit for material you seek.Sol fie of the very best books in any library are the reference books , which may not be taken home.Learn what topics they cover and how best to use them , for these books are wonderful repositories ( 储藏室、资料库 )of human knowledge. K) Your library can give you help on any subject.It can even be your business and legal advisor. How many times have you scratched your head over how to get a tax rebate( 折扣 )on your summer job? You , 11 find guides to that.Want to defend yourself in traffic coup? Find out how in legal books at the library. L) Library Projects Can Be Fun and Rewardin g . Here are a few ideas : 1.What are your roots? Trace your ancestors.Many libraries specialize in genealogy. 2.Did George Washington sleep nearby? Or Billy the Kid? Your library’s collection of local history books can put you on the trail. 3.Cook a Polynesian feast.Or an ancient Roman banquet.Read how in the library’s cook books. 4.Take up photography.Check the library for consumer reviews of cameras before you buy.Take out books on lightin9 , composition , or darkroom techniques or—you name it! M)If you haven , t detected by now my enthusiasm for libraries , let me offer two personal notes.I'm particularly pleased that in recent years two beautiful libraries have been named after me : a small community library in Quakertown , Pennsylvania , and the huge research library located at the University of Northern Colorado in Greeley.And I like libraries so much that I married a librarian. 1.The nucleus of any public library is the card catalog. 2.Yesterday’s best sellers are still good for readin9 , which shouldn’t be overlooked. 3.The author suggests that people should go to the library for answers when things go wrong 4.The Reader ’ s Guide is a green—bound index which provides a guide to very latest expert information of any subject that interests readers. 5.The sure remedy to kick the TV habit is to take home from the library interesting books to read. 6.There are various kinds of fun and rewarding projects available in different libraries. 7.A notebook will help readers to record the identification numbers of the frequently used books which can’t be taken home. 8.Readers should not try to return the book taken from the stacks to their desk to its proper place. 9.When asking for help , readers are suggested not asking the reference librarians silly questions they ought to solve themselves. 10. Your library not only helps your business , but also becomes your legal ad visor.
【单选题】--- Is your school far from here? --- Not very far , A. i t's about 10 minutes’ walk. B. i t needs to work 10 minutes.
A.
i t's about 10 minutes’ walk.
B.
i t needs to work 10 minutes.
【简答题】After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the day. The rest that you get while sleeping ...
【单选题】国共十年对峙时期 , 以毛泽东为代表的中国共产党人之所以能开创出以农村包围城市的中国革命道路其主要依据是 ()
A.
总结了大革命失败的教训
B.
进攻长沙遭到严重挫折
C.
井冈山具备开创根据地的良好条件
D.
我国的国情和当时形势
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【多选题】How to Use a Library A)You’re driving your car home from work or sch001.And something goes wron9.The engine stalls out at lights , holds back as you go to pass.It needs a tune up and soon.Where do you...
A.
B.
Guthrie’s The Big Sky , Carl Van Doren’s Benjamin Franklin , Mari Sandoz’s.Old Jules , and Norman Mailer’s The Naked and the Dead. F) How do you find these or any other books you’re looking for? It’s easy—with the card catalog. Every time I go to the library——and I go more than once a week——I invariably make a beeline to the card catalog before anything else.It’s the nucleus of any public library.The card catalog lists every book in the library by : 1.author;2.title;3.subject.Let’s pick an interesting subject to look up.I have always been fascinated by astronomy.You’ll be surprised at the wealth of material you will find under “a strong my” to draw upon.And the absorbing books you didn’t know existed on it. CAUTION : Always have a pencil and paper when you use the card cata log . G) Once you jot down the numbers of the books you are interested in , you are ready to find them on the shelves.Libraries call the shelves “the stacks”.In many smaller libraries , which you’ll be using , the stacks will be open for you to browse.To me there is a special thrill in tracking down the books I want in the stacks !For invariably,I find books about which I knew nothin g , and these often turn out to be the very ones l need.You will find the same thing happening to you when you start to browse in the stacks.“A learned mind is the end product of browsing.” CAUTION : If you take a book from the stack s to your work desk , do not try to return it to its proper place.That’s work for the experts.If you replace it incorrectly, the next seeker won’t be able to find it. H)Some of the brightest and best.informed men and women in America are the librarians who specialize in providing reference help.Introduce yourself State your problem.And be amazed at how much he p you will receive.CAUTION : Don’t waste the time of this expert by asking silly questions you ought to solve yourself.Save the reference librarian for the really big ones. I) You shot : you also learn to use the Reader's Guide to Periodical Literature.This green—bound index is me of the most useful items in any library.It indexes all the articles in the major magazines , including newspaper magazine supplements.Thus it provides a guide to the very latest expert information of any subject that interests you.So if you want to do a really first—class job , find out which magazines your library subscribes to , then consult the Reader's Guide and track down recent articles on your subject.When you use this wonderful tool effectively, you show the mark of a real scholar. J) Since you can take most books home , but not magazines , take full notes when using the latter. Many libraries today provide a reprographic machine that can quickly copy pages you need from magazines and books.Ask about it : If you are working on a project of some size which will require repeated library visits , keep a small notebook in which you record the identification numbers of the books you will be using frequently.This will save you valuable time , because you won’t have to consult the card catalog or search aimlessly through the stacks each time you visit for material you seek.Sol fie of the very best books in any library are the reference books , which may not be taken home.Learn what topics they cover and how best to use them , for these books are wonderful repositories ( 储藏室、资料库 )of human knowledge. K) Your library can give you help on any subject.It can even be your business and legal advisor. How many times have you scratched your head over how to get a tax rebate( 折扣 )on your summer job? You , 11 find guides to that.Want to defend yourself in traffic coup? Find out how in legal books at the library. L) Library Projects Can Be Fun and Rewardin g . Here are a few ideas : 1.What are your roots? Trace your ancestors.Many libraries specialize in genealogy. 2.Did George Washington sleep nearby? Or Billy the Kid? Your library’s collection of local history books can put you on the trail. 3.Cook a Polynesian feast.Or an ancient Roman banquet.Read how in the library’s cook books. 4.Take up photography.Check the library for consumer reviews of cameras before you buy.Take out books on lightin9 , composition , or darkroom techniques or—you name it! M)If you haven , t detected by now my enthusiasm for libraries , let me offer two personal notes.I'm particularly pleased that in recent years two beautiful libraries have been named after me : a small community library in Quakertown , Pennsylvania , and the huge research library located at the University of Northern Colorado in Greeley.And I like libraries so much that I married a librarian. 1.The nucleus of any public library is the card catalog. 2.Yesterday’s best sellers are still good for readin9 , which shouldn’t be overlooked. 3.The author suggests that people should go to the library for answers when things go wrong 4.The Reader ’ s Guide is a green—bound index which provides a guide to very latest expert information of any subject that interests readers. 5.The sure remedy to kick the TV habit is to take home from the library interesting books to read. 6.There are various kinds of fun and rewarding projects available in different libraries. 7.A notebook will help readers to record the identification numbers of the frequently used books which can’t be taken home. 8.Readers should not try to return the book taken from the stacks to their desk to its proper place. 9.When asking for help , readers are suggested not asking the reference librarians silly questions they ought to solve themselves. 10. Your library not only helps your business , but also becomes your legal ad visor.
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