We are writing to you to complain about the non-delivery of goods () Contract CN0011.A.ofB
We are writing to you to complain about the non-delivery of goods () Contract CN0011.
A.of
B.for
C.under
D.with
We are writing to you to complain about the non-delivery of goods () Contract CN0011.
A.of
B.for
C.under
D.with
While we appoint an agent, it is usual to make the appointment ().
A.in writing
B.on paper
C.with writing
D.write down
A、narratives
B、heroic couplets,
C、verses
D、romances
A.response
B.to ask for
C.to command
D.in response to
B.“As” can also be used when we want to say that when one thing changes, another thing changes at the same time
C.In formal speech and writing, we can often leave out “subject + be” in clauses with “when” and “while” if the main and subordinate clause refer to the same subject
D.“While” is used when you are mentioning a time or event in the past and indicating that a situation has continued from then until now
A.It's;ll be great to see your smiling face again.
B.Make sure you eat all your chicken soup, drink all your orange juice, and get the rest you need so you can get better soon.
C.We're sorry you haven't been feeling well and we miss you at the office.
D.Take care,
E.Carol, Doris, Elsa
F.We hope you enjoy the crossword puzzle.
The following sections of this chapter will describe specific resources available in many libraries. In some cases you may already be aware of a resource and may use it frequently and successfully. In other cases you may be completely unfamiliar with a resource. Your goal should be to become aware of what is available and to know how to use each of these resources to help you solve the problem they are designed to solve.
When educators have a piece of information that they want to share with their colleagues, they often make this information available in professional journals or at professional meetings. It would often be useful to have access to such information, and this chapter will describe the special services that enable us to locate such information.
1. The library resources can be helpful when we _______.
A.want to find a better way to measure attitudes toward music
B.are preparing a paper for a professional journal
C.are writing a dissertation
D.All of the above
2.The familiarity of readers with different resources _______.
A.is more or less the same
B.varies slightly
C.differs greatly
D.should not be different
3.The author believes that _______.
A.library resources should be used frequently and completely
B.library resources cannot be made good use of if they are not available to us
C.one is supposed to be aware of the library resources that are usually not available
D.one is supposed to have good knowledge and make good use of resources
4.When educators wish to share some information with their colleagues, they often _______.
A.publish it in a professional journal
B.attend professional meetings
C.get access to it in the library
D.make use of some library services
5. The chapter in question _______.
A.mainly deals with the ways of dissertation writing
B.presents information on publishing papers in professional journals
C.introduces some library services
D.describes some professional meetings
【C1】
A.However
B.Since
C.Although
D.Unless
设f(x,y)与φ(x,y)均为可微函数,且φˊ(x,y)≠0,已知(xo,yo)是f(x,y)在约束条件φ(x,y)=0下的一个极值点,下列选项正确的是().
A.若fˊx(x,yo)=0,则fˊy(xo,yo)=0
B.若fˊx(xo,yo)=0,则fˊy(xo,yo)≠0
C.若fˊx(xo,yo)≠0,则fˊy(xo,yo)=0
D.若fˊx(xo,yo)≠0,则fˊy(xo,yo)≠0