共查询到20条相似文献，搜索用时 15 毫秒
1.
The present study presents a detailed report of a project implemented to solve the problem that most of my students do not like doing listening practice. It is hypothesized that learners＇ hstening ability will be greatly increased by a better organization in this respect. This hypothesis is verified by a four-week practice of well-organized hstening activities. 相似文献
2.
《中国科学院院刊(英文版)》2003,17(1):9-9
CAS researchers announced inChinas Modernization Re-port 2003 that the gap be-tween the Chinas modernizationlevel and that achieved by developedcountries is narrowing steadily.The report, which was recentlycompleted by the CAS Moderniza-tion Research Center (MRC), ana-lyzes the theories and practice of themodernization research during thelast 50 years of the 20th century. Onthe basis of analyzing a great amountof data, researchers suggest that theworldwide course of modernizationdrive fr… 相似文献
3.
《中国科学院院刊(英文版)》2014,(3):206-209
<正>May 26,2014,BeijingScience is a human enterprise in the pursuit of knowledge.The scientific revolution that occurred in the 17th Century initiated the advances of modern science.The scientifi c knowledge system created by human beings,the tremendous productivity brought about by science,and the spirit,methodologies and norms formulated in scientific practice since the 17th Century have long become essential elements of modern civilization.Today’s world is characterized by rapid knowledge expansion,an explosion of data and information and the globalization of economies.In these times,scientific excellence is an essential principle for transforming human thinking and 相似文献
4.
Many students in college are all have one felling is that their English are progressing well, the graimnar are now familiar, the reading comprehension are no problem, communicating also quite fluently, but： Listening is still a problem! So, how to listen？ And how to improve listening ability effectively？ Methods are very important. This paper will provide some strategies in the training of listening. 相似文献
5.
《中国科学院院刊(英文版)》2008,22(2):88-89
The regulatory mechanism for neuronal migration in the developing cortex is a major unsolved problem in developmental neurobiology. It is generally accepted that the migration of newborn pyramidal neurons from the ventrieular zone toward upper cortical layers is guided by radial glial fibers in the developing cortex, and that the laminar structure of the cortex isformed through regulated attachment and detachment of migrating neurons with radial glial fibers. However, whether the radial migration of cortical neurons can be guided by a gradient of diffusible factors is unknown, a potential guidance mechanism that has long been overlooked. 相似文献
6.
《中国科学院院刊(英文版)》2005,19(4):211-212
An international consortium headed by CAS researchers has identified that the Chinese horseshoe bat is healthy carriers of a virus that is very closely related to those causing SARS(severe acute respiratory syndrome). Their work was reported online on Sept. 29 by the Science magazine. The finding supports an independent study with similar results by Hong Kong scientists,which is reported by the Sept. 27issue of Proceedings of the National Academy of Sciences. 相似文献
7.
Michel Blanc 《中国科学院院刊(英文版)》2018,(1)
正For several months I heard of the Five-hundredmeter Aperture Spherical radio Telescope(FAST)and dreamed of visiting it.FAST is a myth:the largest radio telescope in the world,a gigantic 500-meterwide dish,built by Chinese astronomers in a remote countryside of Guizhou Province in southern China,performing its first test operations and listening to the faint murmurs of the distant universe.And now,with Alain Cirou sitting next to me,we 相似文献
8.
《中国科学院院刊(英文版)》2005,(4)
An international consortiumheaded by CAS research-ers has identified that theChinese horseshoe bat is healthycarriers of a virus that is very closelyrelated to those causing SARS( sev er e ac ut e r e spi r at or ysyndrome). Their work was reportedonline on Sept. 29 by the Sciencemagazine. The finding supports anindependent study with similar re-sults by Hong Kong scientists,which is reported by the Sept. 27issue of Proceedings of the Na-tional Academy of Sciences. The outbreak of the d… 相似文献
9.
The paper argues that the theory that opens out the nature of subject indexing process is required, if the process consists of a tremor of steps and elements and it is a range of interpretations, too. The paper points out that Peirce' s semiotics is the theory by which we may study and understand the lmture of interpretation in subject indexing pro-cess. In recent years, there is a great interest in semiofcs in library and information science field. The paper discusses some basic issues of semiotics and its use in information science. 相似文献
10.
构筑信息服务保障体系思实录 总被引：2，自引：0，他引：2
Combining theory with practice and proceeding from operability, this paper puts forward 7 principles of con-structing the information service guarantee system, that is, engineering, capability, mutual service, service advantages,Web-besed information, overall coordination and sustained perfection. Meanwhile, the paper poirts out that, in the con-stmcfion and operation of the information service guarantee system, the interrelationship of key elements is more important than the constitution of key elements, and the construction of the system is more important than the application of technology. 相似文献
11.
What is word? WORD is a unit of expression that has universal intuitive recognition by native-speakers, whether it is expressed in spoken or written form. It is agreed that three senses are involved in defining “word“. 相似文献
12.
《中国科学院院刊(英文版)》2005,(3)
Co-sponsored by MOST, SSGA, CAS and Beijing S&T Commission, this project is car- ried out by the CAS Institute of Computing Technology. It focuses on the key technologies in digi- tal and 3-D computer simulation and the computer-aided software for the training of sport items such as diving and trampoline, so as to help athletes to improve their performance. It is expected to bring two transforma-tions to the athlete-training methods: one is to change the traditional practice of a coach… 相似文献
13.
《中国科学院院刊(英文版)》2007,21(4):203-203
Although both the generalpurpose genotype hypothesis and the hypothesis about the evolution of invasiveness predict that invasive species are characterized by particular traits that confer invasiveness, what these traits are still remains unclear. A theory put forward by a CAS botanist and colleagues suggests that the success of an invasive plant in a new habitat is due to the allocation of more nitrogen to its photosynthesis. As reported in a recent issue of Oecologia, the hypothesis has been supported by their research on the metabolic comparison between an invasive shrub and five native plants. 相似文献
14.
With great care Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer says: "This is the gem of our collections: the fossil of a bird that lived million years ago!" Then pointing at a tiny mound he explains: "Look this is the claw that is the head. It was in the egg shell ready to hatch ... The species fell into a family of waterside inhabitants."…… 《中国科学院院刊(英文版)》2008,22(1):43-46
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says： “This is the gem of our collections： the fossil of a bird that lived 125 million years ago!” Then, pointing at a tiny mound, he explains： “Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants.” 相似文献
15.
《中国科学院院刊(英文版)》2004,(1)
As part of a consultancy project by the CAS Aca-demic Divisions (CASAD) on ecological reconstruction and sustainable development in China's west, a task force headed by CAS members Yuan Xiandao and Sun Honglie conducted a six-day survey of southwest China's Guizhou Province.After listening to an introduction on local economic and ecological development by senior officials, in- 相似文献
16.
《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
17.
《中国科学院院刊(英文版)》2021,(1):4-5
正Nestled in the mountainous landscape of Guizhou in southwest China,the Five-hundred-meter Aperture Spherical radio Telescope (FAST) is a single-dish radio telescope the size of 30 soccer fields.It has recently finished 15 months of listening to the sounds of the Universe.Data collected during this inaugural listening session and the pre-launch testing period has already resulted in more than 60 peer-reviewed publications. 相似文献
18.
《中国科学院院刊(英文版)》2006,20(2)
People are always fascinated by ways that some members of mammalian species (such as dolphins, bats and some rodents) communicate using sounds that we cannot hear. But think twice if you say the capacity of producing and detecting ultrasounds (frequencies greater than 20kHz) is limited to mammalians. A study implemented by Prof. SHEN Junxian from the CAS Institute of Biophysics (IBP) and colleagues in CAS and abroad showed that a rare frog species in China should also be added to that list. It is the first documented case of a non-mammalian species being able to use ultrasonic communication. Their work was reported in the March 16 issue of the journal Nature. 相似文献
19.
《中国专利与商标》2007,(4)
In the particular field of biological technology,biologi- cal material deposit is an extremely important part of patent application.Since it is difficult to clearly describe the specific features of a biological material or even if it is clearly de- scribed,a person skilled in the art is unable to carry out the invention in the absence of the biological material per se.For that matter,to meet the requirement of sufficient disclosure under Article 26,paragraph three of the Patent Law,Rule 25 of the Implementing Regulations of the Patent Law provides that the sample of a biological material in the field of biologi- cal technology should be deposited with a depositary insti- tution designated by the SIPO,which shows that biological 相似文献
20.
《中国科学院院刊(英文版)》2015,(4)
<正>Copper is a trace element that is required by almost all forms of life.Acting as cofactors for various key metabolism enzymes,copper takes part in many vital biological processes.Previous studies have found the concentration of copper is significantly higher in tumor cells than in normal cells.In addition,copper can promote angiogenesis by activating VEGF and FGF signaling.A recent paper in Nature revealed that copper is essential for oncogenic 相似文献