All these gifts must be mailed immediate

题型:选择题

问题:

All these gifts must be mailed immediately ______in time for Christmas. [ ]

A. so as to have received    

B. so as to be received

C. so as to be receiving     

D. so as to receive

考点:从属连词不定式的被动式
题型:选择题

设NA代表阿伏加德罗常数的值,下列说法正确的是(  )

A.6.4g铜与足量稀硫酸反应产生H2为0.1NA

B.NA个H2O分子在标准状况下体积约为22.4L

C.标准状况下,当O2和O3的原子数均为NA时,它们具有相同的体积

D.常温常压下,16gCH4所含的电子数为10NA

题型:选择题

干性支气管扩张的主要临床表现是()

A.每年冬季,春季、咳嗽、咳痰

B.长期反复咯血

C.咳嗽、低热、乏力

D.高热、咳嗽、大量脓臭痰

E.咳嗽、喘息、活动后呼吸困难

题型:选择题

The most exciting kind of education is also the most personal. Nothing can exceed (超越) the joy of discovering for yourself something that is important to you! It may be an idea or a bit of information you come across accidentally—or a sudden insight, fitting together pieces of information or working through a problem. Such personal encounters are the “payoff” in education. A teacher may direct you to learning and even encourage you in it—but no teacher can make the excitement or the joy happen. That's up to you.

20090318

 
A research paper, assigned in a course and perhaps checked at various stages by an instructor, leads you beyond classrooms, beyond the texts for classes and into a process where the joy of discovery and learning can come to you many times. Preparing the research paper is an active and individual process, and ideal learning process. It provides a structure within which you can make exciting discoveries, of knowledge and of self, that are basic to education. But the research paper also gives you a chance to individualize a school assignment, to suit a piece of work to your own interests and abilities, to show others what you can do. Writing a research paper is more than just a classroom exercise. It is an experience in searching out, understanding and synthesizing(综合), which forms the basis of many skills applicable(可利用的) to both academic and nonacademic tasks. It is, in the fullest sense, a discovering of an education. So, to produce a good research paper is both a useful and a thoroughly satisfying experience!

To some, the thought of having to write an assigned number of pages, often more than ever produced before, is upsetting. To others, the very idea of having to work independently is threatening. But there is no need to approach paper assignment with anxiety, and nobody should view the research paper as an obstacle to overcome. Instead, consider it a goal to accomplish, a goal within reach if you use the help this book can give you.
57.According to the writer, personal discoveries____________.
A.will give one encouragement and direction
B.are helpful in finding the right information
C.are the most valuable part of one's personal education
D.will help one to successfully complete school assignments
58.It can be inferred from the passage that writing a research paper gives one chances_________ .
A.to fully develop one's personal abilities
B.to use the skills learnt in the classroom
C.to prove that one is a productive writer
D.to demonstrate how well one can accomplish school assignment
59.The writer argues in the passage that____________.
A.one should explore new areas in research
B.one should trust one's own ability to meet course requirements
C.one should consider research paper writing a pleasure, not a burden
D.one should use all one's knowledge and skills when doing research
60.What will probably follow this passage?
A.How to write a research paper.
B.The importance of research in education.
C.How to make new discoveries for oneself.
D.The skill of putting pieces of information together.
题型:选择题

拔牙创内的血液形成血凝块的时间一般为

A.1分钟左右
B.5分钟左右
C.15分钟左右
D.30分钟左右
E.60分钟左右

题型:选择题

肝血的盛衰,能影响筋的运动,“爪为筋之余”,所以亦可以影响到爪甲的枯荣。()

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