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1.
1.This is song I’ve told you about.Isn’t it beautiful one?A.the;the B.a;aC.the;a D.a;the2.There is book on the desk.It is interesting book.A.a;a B.a;theC.a;an D.the;the3.Jim likes to play football and w as on school team.A./;theB./;/C.the;the D.a;a4.This m orning I had egg and a bottleof m ilk for m y breakfast.A.anB.a C.the D./5.—W hat’s the m atter with you?—I caught bad cold and had to stay in bed.A.a;/B.a;the C.a;a D.the;the6.sun is bigger than earth.A.A;the B.A;anC.The;a… 相似文献
2.
丁楠 《中学英语园地(高三版)》2007,(Z2)
1. Wouldn1t it be wonderful world if all nations lived in peace with one another? A. a,× B. the,× C. a,the D. the,theA S c h o o l G a r d e n O f E n g l i s h 中 学 英 语 园 地 2 0 0 7 . 7 - 8 2. Mum was sitting on chair near door when I came back. A. the,a B. a,a C. a,the D. the,the 3. Xi相似文献
3.
乔南 《中学数学教学参考》2008,(11)
Vectors may also be multiplied by a number. The productof the vector a by the number λ is defined as the vector a λ=λa, the absolute value of which is obtained by multiplying theabsolute value of the vector a by the absolute value of thenumber λ, i. e. |λa|=|λ||a|, the direction coinciding withthe direction of the vector a or being in the opposite sensedepending on whether λ>0 or λ<0. If λ=0 or a=0, then λ a 相似文献
4.
My home is very beautiful. There ore ten rooms in my home. We have three bedrooms, a living room, a dining room, a study, a kitchen, a balcony, and two bathrooms. There are many flowers on the balcony. My mother likes to drink tea on the balcony. There is a big TV in the living room. I always watch TV in the living room. There are many books in the study. My father usually works on the computer in the study. There is a big bed and two lamps in the bedroom. The kitchen is small, but delicious food always comeS from the kitchen. 相似文献
5.
Wendy Franklin 《英语沙龙》2011,(1):22-22,64
The Smith Jones Robinson Riddle
On a train, Smith, Robinson and Jones are the fireman, the brakeman and the engineer, but NOT respectively. Also aboard the train are three businessmen who have the same names： a Mr. Smith, a Mr. Robinson and a Mr. Jones： Using the clues below, can you determine the identity of the Engineer？. 相似文献
6.
1.______Japan is to______east of our country.A.The;a B.A;theC.The;the D./;the2.—What do you think of the president of yourcompany?—Oh,he is______president who is very strict,but it!s______pleasure to work with him.A.the;the B.a;a C.a;the D.the;a3.The ev… 相似文献
7.
1.Hefinishedallhisworkwithpleasureandhefeltitplea-suretoworkwithyou.A.the;theB.a;aC.×;aD.the;×2.AliceisfondofplayingpianowhileHenryisinterestedinlisteningtomusic.A.×;theB.×;×C.the;×D.the;the3.Shehasherreasonforkeepinghermarriagesecretformo-ment.A.the;aB.a;theC.the;theD.a;a4.ImChineseandIdofeelChineselanguageismostbeau-tifullanguage.A.×;aB.the;aC.the;×D.a;a5.HejoinedthePartyin1930s;thatwaswhenhewasinthir-ties.A.the;theB.×;hisC.×;theD.the;his6.—Ihearthatmorethan30peoplewere… 相似文献
8.
By the resultant theory, the E-characteristic polynomial of a real rectangular tensor is defined. It is proved that an E-singular value of a real rectangular tensor is always a root of the E-characteristic polynomial. The definition of the regularity of square tensors is generalized to the rectangular tensors, and in the regular case, a root of the E-characteristic polynomial of a special rectangular tensor is an E-singular value of the rectangular tensor. Moreover, the best rank-one approximation of a real partially symmetric rectangular tensor is investigated. 相似文献
9.
My Fair Lady is a movie about how a poor flower girl is turned into a graceful lady by changing the language she speaks with the help of a linguist.It demonstrates the great influence that language exerts on a person’s experience.This paper tries to analyze the movie from the perspective of sociolinguistics,especially the language variations caused by region,class,and gender difference,with the aim of helping the reader to have a better understanding of the movie and displaying the charm of language. 相似文献
10.
American Dream refers to the belief of the majority of Americans.Through hard work,thrift,and determination,they can surely achieve a better life and live a comfortable life.Such an American Dream has a profound influence on several generations of Americans.American Dream has a close relationship with people’ s working life and cultural activities.Death of a Salesman is a typical play about the pursuit and the illusionary of the Dream follower.In Death of a Salesman,the American Dream is the main hero as well as Willy Loman’ s spiritual pillar.The pursuit,the realization,and the disillusionment of the American Dream develop with Willy and his family. 相似文献
11.
《Reading and Writing(高中版)》2007,(3)
一 Nearly a week passed before the girl was able to explain which had happened to her. One afternoon she set out from the coast on a small boat and was caught in a storm. Towards evening, the boat struck a rock but the girl jumped into the sea. Then she swam to the shore after spending the whole night in water. During that time she covered a distance from eight miles. Early next morning,she saw a light ahead. 相似文献
12.
Two numerical simulations were performed to investigate the protective effect of the foam cladding. One simulation is based on a previous experimental study, which is a ballistic pendulum with and without a foam cladding subjected to close-range blast loading. The other model is a steel beam with and without a foam cladding under blast loading. The overpressure due to the blast event can be calculated by the empirical function ConWep or by an arbitrary Lagrangian-Eulerian (ALE) coupling model. The first approach is relatively simple and widely used. The second approach can model the propagation of the blast wave in the air and the interaction between the air and the solid. It is found that the pendulum with the foam cladding always swings to a larger rotation angel compared to a bare pendulum. However, the steel beam with an appropriate foam cladding has a smaller deflection compared to the bare beam without a foam cladding. It is concluded that the protective effect of the foam cladding depends on the properties of the foam and the protected structure. 相似文献
13.
MA Guowei YE Ziqing ZHANG Xingui 《天津大学学报(英文版)》2006,12(B09):122-125
Two numerical simulations were performed to investigate the protective effect of the foam cladding. One simulation is based on a previous experimental study, which is a ballistic pendulum with and without a foam cladding subjected to close-range blast loading. The other model is a steel beam with and without a foam cladding under blast loading. The overpressure due to the blast event can be calculated by the empirical function ConWep or by an arbitrary Lagrangian-Eulerian （ALE） coupling model. The first approach is relatively simple and widely used. The second approach can model the propagation of the blast wave in the air and the interaction between the air and the solid. It is found that the pendulum with the foam cladding always swings to a larger rotation angel compared to a bare pendulum. However, the steel beam with an appropriate foam cladding has a smaller deflection compared to the bare beam without a foam cladding. It is concluded that the protective effect of the foam cladding depends on the properties of the foam and the protected structure. 相似文献
14.
一、选择填空1.-Merry Christmas and Happy New Year! ~ __ A.It’s very nice of you B.You’re welcome C.The same to you D.Thank you2.Most English people have three names:__first name,__middle name and__family name.A.a;a;the B.the;a;theC. a;the;the D.the;the;a3.China has built a Great Green Wall 相似文献
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16.
The flow in a finite diverging channel opening into a large space and resembling the experimental prototype of Putkaradze and Vorobieff （2006） was numerically investigated. The effects of the Reynolds number, initial condition, intersection angle, length of the wedge edges, and the outer boundary condition were examined. The numerical results showed that the flow in the wedge undergoes a change from symmetrical flow to unsymmetrical flow with a weak backflow, then a vortical （circulation） flow and finally an unsteady jet flow as the Reynolds number is increased for an intersection angle of 32° and a wedge edge of length 30 times the width of the inlet slit. For the unsteady flow, the jet attached to one side of the wedge constantly loses stability and rolls up into a mushroom-shaped vortex-pair near the outlet of the wedge. As the intersection angle is increased to 50°, a stable jet flow is observed as a new regime between the vortex and unsteady regimes. Both the intersection angle and the wedge length have negative effects on the stability of the flow, although the effect of the wedge length on the critical Reynolds number for the symmetry-breaking instability is not pronounced. The outer boundary condition was found not to affect the flow patterns inside the wedge significantly. At a certain Re regime above the onset of symmetry-breaking instability, the flows evolve into steady state very slowly except for the initial stage in the case of decreasing flow flux. Two different solutions can be observed within the normal observation time for the experiment, providing a possible explanation for the hysteresis phenomenon in the experiment. 相似文献
17.
When constructing a test there are various factors which must be born in mind. Firstly the purpose of the test. both for the learner and for the teacher, must be clear. For the teacher a test may be a means of evaluating a course, of providing information about what needs to be taught , or about the learningneeds of the students. 相似文献
18.
李士芗 《现代远程教育研究》2000,(2)
综合练习 A1 完形填空(10分)Men first measured time(?)using a stick in the ground.The lengthof the(?)shadow would(?)what time of day it was.(?),the Egyp-tians used a pillar,(?)as a gnomon,and then developed a simple sundial,(?)consisted of a stone with a pointer on it.The stone was placed in aneast-west direction,and the shadow of the pointer showed the time.About 300 BC,a Babylonian(?)Berosus invented a semi-circularsundial,(?)he marked twelve hours.The Babylonians,like the Egyp- 相似文献
19.
The dynamic response of an infinite beam placed on a Pasternak foundation when the system was subjected to a moving load was investigated. We used the double Fourier transform and its inversion to solve the formulations of the problem. A closed form analytic solution of the beam was obtained by the theorem of residues. We selected a numerical example to illustrate the dynamic response of the beam on Pasternak and Winkler foundations, respectively. We discuss the effect of the moving load velocity on the dynamic displacement response of the beam. The maximum deflection of the beam increases slightly with increased load velocity but increases significantly with reduced shear modulus of subgrade at a given velocity. The maximum deflection of a beam resting on a Pasternak foundation is much smaller than that of a beam on a Winkler foundation. 相似文献
20.
For a building structure subjected to impulsive loading, particularly shock and impact loading , the response of the critical columns is crucial to the behaviour of the entire system during and after the blast loading phase. Therefore, an appropriate evaluation of the column response and damage under short-duration impulsive loading is important in a comprehensive assessment of the performance of a building system. This paper reports a dynamic analysis approach for the response of RC columns subjected to impulsive loading. Considering that the dynamic response of a column in a frame structure can also be affected by the floor movement which relates to the global vibration of the frame system, a generic column-mass model is used, in which a concentrated mass is attached to the column top to simulate the effect of a global vibration. To take into account the high shear effect under impulsive load, the model is formulated using Timoshenko beam theory, and three main nonlinear mechanisms are considered. Two typical scenarios, one under a direct air blast loading, and another under a blast-induced ground excitation, are analyzed and the primary response features are highlighted. 相似文献