There are two main types of arguments: deductive and productive.

A . Oil Rig chain and Oil Field Stud Link chain B . Flash-butt welded chain and Di-Lok chain C . Flash-butt welded chain and Oil Rig chain D . Oil Field Stud Link chain and Flash-butt welded chai

A . one salt water, one fresh water B . one salt water, one fuel C . one fresh water, one fuel D . one steam, one fuel

A . U-Type and posilok shackles B . C-Type and wedge shackles C . D-Type and bow shackles D . wedge and kenter shackle

A .  Blocking cipher andnon-blocking cipher B .  CBC cipher and EBC cipher C .  Block cipher and Stream cipher D .  Blocker cipher and Streamer cipher E .  3DES cipher and AES cipher

A . forwarding information base B . adjacency tables C . neighbor tables D . caching tables E . route table

A、U-shape B、 Classroom-type C、Theater-type D、Hollow-shape

A．13-and 26-frame B．26-and 51-frame C．51-and 102-frame

The first is called the "tank test". A modem airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure (结构) of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (压力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger. The most dangerous test happens when the new plane is going through test flights in the air. The test pilot must find out exactly what happens when the engines(发动机) are all shut off at once. The plane begins to fall like a stone. It is the pilot's job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers. By doing the "tank test", the engineers can find out______. A．the amount of air in the plane B．the strength of the plane structure C．the pressure inside and outside the plane D．the power of the airplane engines

A、describe your own experiences, feelings, reflections and an event; B、describe a simple graph or picture; C、express personal opinions on a familiar topic; D、write for everyday situations (advertisement or letter etc.)

A.migrants B.transformers C.immigrants D.emigrants

These crimes are not usually committed by people who are poor or in need. Young people often dislike and hate the adult world. They will do things to show that they are rebels. Also in Britain today it is easier for young people to commit crimes because they have more freedom to go where they like and more money to do what they like. There are two other possible causes which are worth mentioning. More and more people in Britain live in large towns. In a large town no one knows who anyone else is or where they live. But in the village I come from crimes are rare because everyone knows everyone else. Although it is difficult to explain, I think the last cause is very important. Perhaps there is something with our society which encourages violence and crime. It is a fact that all the time children are exposed to films and reports about crime and violence. Many people do not agree that this influences the young people, but I think that young people are very much influenced by the society they grow in. I feel that the fault may be as much with our whole society as with these young people. 6. From the passage we know that many British people are confused about (). A. the cause of juvenile crimes B. the rise of the crime rate C. the problem of crimes in their country D. the various kinds of juvenile delinquency 7. One reason why young people in large cities are more likely to commit crimes is that (). A. nobody knows anything about others B. they are free to move C. they live a better life D. they need more money 8. According to the passage, which groups of the following young people are LEAST likely to commit crimes？ A. Those living in big cities B. Those who are in need of help C. Those who are very poor D. Those living in the countryside 9. Unlike many others, the author holds that one important cause for juvenile delinquency is that(). A. young people nowadays do not like adult world B. young people in Britain today are freer than before C. too many young people have come to live in big cities D. young people are influenced by crime and violence in films and newspapers 10.According to the passage, which is to blame for juvenile crimes, apart from the young people themselves？ A. The adult world B. Their parents C. The development of the cities D. The society

此题为判断题(对，错)。