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1.
1. How can a hat talk?2. What is smaller than an insect's mouth?3. What season is the most dangerous one?4. What kind of man can raisethings without lifting them?Keys: #1. Add the letter C and you make it chat. 2. Anything it eats. 3. Autumn. Because it is also fall. 4. A farmer. He can raise pigs, chickens and so on without lifting them.  相似文献   

2.
Everyone needs friends.There is an old saying:A life without a friend is a life without the sun.But how can we find real friendship and keep it? I think finding friendship is just like planting a tree.You plant the seed,take care of it and make it grow.  相似文献   

3.
A Now,imagine (设想)there is a large live duck inside a very large bottle. The bottle is made of glass,and has a very narrow neck. How can you get the duck out of the bottle without breaking it or hurting the duck?  相似文献   

4.
Are you able to send a letter with pictures and sounds to someone, anywhere in the world without putting a stamp on it? With e-mail you can just do that. Electronic mail (e-mail) is a way of sending messages to other people. Using a computer you can send e-mail quickly and easily. The post is much slower and dearer than e-mail. E-mail can send its message to the other side of the world in seconds.  相似文献   

5.
1. Why are girls afraid of the letter C? 2. Why is the letter E so important? 3. Why are the letter G and letter S in "gloves" elose to eaeh other? 4. What letter is an aninal? 5. What letter is a question? 6. Why is U the jolliest letter? 7. How do you feel today? 8. How can you make a rope shorter without cutting or winding it?  相似文献   

6.
What is a computer virus?A computer virus isone kind of threat to the security and integrity ofcomputer systems.Like other threats,a computervirus can cause the loss or alteration of programs ordata.Unlike many other threats,a computer viruscan spread from program to program and from systemto system,without direct human intervention.  相似文献   

7.
TANG Xiao-yi 《海外英语》2014,(16):244-246
“A driving instructor can teach people driving without knowing anything about car mechanics. So why should a language teacher know anything about linguistics? ”To answer the question, this paper discusses the relevance of linguistics to language teaching, analyses the value of linguistics to a language teacher and ends up with a conclusion that a language teacher should learn something about linguistics.  相似文献   

8.
谜语     
1.W here does Fridaycom e before Thursday?什么地方星期五在星期四的前面?2.W hy can’t a bi-cycle stand up without akickstand?为什么自行车没有站架就站不起来呢?3.W hat,by losingone eye,has nothing leftbut a nose?什么去掉一只眼睛只剩下鼻子?4.H ow m any feet are there in a yard?一码有几英尺?5.W hat has hands but no feet,a face but noeyes,tells but does not talk?什么有手没有耳朵,有脸但没有眼睛,能告诉你事情却不会说话?6.W hat can hear you without ears and can an-sw er you without a m outh?什么不用耳…  相似文献   

9.
What is the greatest in your heart? Have you ever thought about this question?Someone will say in confidence: "Man!" Maybe you are not wrong, but I don' t agreewith you.There is a special heavenly body called the earth in the cosmic space. The earth isthe only place suitable for human beings to live on."Do you know where life came from?" "From the earth!" "Right!""Do you know where man was born?" "On the earth!" "Right!"Where is there life without the earth? Where can man exist without the eath?the eath  相似文献   

10.
笫一部分:听力(共两书,满分30分)(略) 第二部分:英语知识运用(共两节,满分45分) 第一节单项填空(共15小题;每小题1分,满分15分) 从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。21.Suppose you are in position of a teacher.What Wonld you do when____student breaks the rule in your class? A.a;a B.the;the C.the;a D.不填;the 22.An actor can not well play the role without life  相似文献   

11.
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   

12.
Sugar can suppress the immune system.糖会抑制你体内的防疫系统Sugar can upset the body’s mineral balance.糖会造成体内的水分不平衡  相似文献   

13.
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.
有奖竞猜     
I speak without a Voice. I'm small, light and fleet. I can express other's thought. And I travel without feet. What am I?  相似文献   

15.
A class of new planar dual-mode filters without coupling gaps is proposed. The proposed structures use a single patch wiuhout coupling gaps. Attenuation poles can be implemented on either side of the passband by changing the locations of two feed lines. By cutting two corners in the patch, two attenuation poles on both sides of passband are implemented. A novel dual-mode elliptic-function bandpass filter structure without coupling gaps is also proposed. These new filters can provide a low insertion loss and reduce uncertainty in fabrication owing to the absence of coupling gaps.  相似文献   

16.
Many middle school students like to ask how they can learn English well. This is really a difficult question to answer, Some teachers may frankly tell their students:Memorize new words and phrases, spend much time in reading and soon you will have a good command of English. As a matter of fact,the case is not like this. The English language has a large vocabulary of more than 400,000 words not including phrases. How can a student's brain take in so many words just like a computer? On the other hand, if the student lays too much emphasis on written English (and only learns it well),what will he do when he wants to express himself orally without any communicative competence?The teachers neglect the importance of the other three skills,which are listening,speaking and writing,  相似文献   

17.
Friends     
When asked about whether they can go without friends,many people give a negative answer.Indeed,having no friend means you are living on a small island of loneliness in the midst of a vast ocean without blessedness. Although we may come across many people in our life.yet it’s not easy to make true friends.A good friend can share our sadness as well as happiness.A  相似文献   

18.
Keeping pleasant "He is a fool who can not be angry,but he is really a wise man who will not." The habit of keeping pleasant is indeed better than an income of a thousand dollars a year.The life without cheerfulness is like the severe winter without the sun. We all love cheerful company,but we are apt to forget that cheerfulness is a habit which can be cultivated by all. We find it very difficult to be gay when we are in distress .It requires great courage. We should never forget that to  相似文献   

19.
Single-acting double-stator multi-pumps and multi-motors   总被引:4,自引:0,他引:4  
We investigated a series of novel motors and pumps with a new structure called double-stator. Double-stator can be used as pump or motor just for the working condition on demand. A certain amount of pumps or motors are formed in one shell and these subpumps or submotors can work alone or in company without influence on other pumps or moters. This kind of double-stator pumps (motors) are called multi-pumps (multi-motors). Through the analysis of multifarious connection modes of single-acting double-stator multi-pumps and multi-motors, the mathematical expressions of output flow rate, rotational speed and torque are acquired. The results indicate that different flow rates can be provided by one fixed displacement double-stator multi-pump system under the condition of an unalterable driven speed. Likewise, under the terms of a fixed input flow and without complex variable mechanisms, the functions of double speeds, multiple speeds and even differential connection can be realized by a double-stator multi-motor system with various output rotational speeds and torques.  相似文献   

20.
1.Why are dogs afraid to sunbathe?狗为什么害怕日光浴? 2.When can you go as fast as a rac- ing car?什么时候你能像跑车一样快? 3.What can pierce one's ears without a hole?什么东西不用打洞就可以在耳朵上穿孔?  相似文献   

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