Forget about where we are going to play tennis as it is starting to rain.

A . Trust boundaries are configured in the core of the network to provide the most efficient  forwarding based upon QoS markings， B . Setting trust boundaries at the edge of the network allows intermediate hop devices to  administer QoS policies without detailed packet identification. C . Trust boundaries are used to determine which QoS mechanism will be applied to the traffic.   D . At the trust boundaries， the untrusted traffic will be marked with a new QoS value appropriate  for the policy in place at the point where the traffic entered the campus network.   E . Trust boundaries define the firewall rules for QoS admission into a network.

A . A WHERE clause can be used to restrict both rows and groups. B . A WHERE clause can be used to restrict rows only. C . A HAVING clause can be used to restrict both rows and groups. D . A HAVING clause can be used to restrict groups only. E . A WHERE clause CANNOT be used in a query of the query uses a HAVING clause. F . A HAVING clause CANNOT be used in subqueries.

A . windlasses B . drums C . capstans D . warp end

A . horizontal axis B . crankshaft C . vertical axis D . camshaft

A．resort B．tsunami C．bonus D．mortgage

A．table B．chart C．schedule D．graph

A.as time B.through time C.during time D.over time

A. what B. when C. which D. where

A．transmitting B．transferring C．transacting D．transporting

A major new study shows that the situation may be changing. A large and rapid drop in the world's birth rate has taken place during the past 10 years. Families generally are smaller now than they were a few years ago. It is happening in both developing and industrial nations, Researchers said they found a number of reasons for this. More men and women are waiting longer to get married and are using birth control devices and methods to prevent or delay pregnancy. More women are going to school or working at jobs away from their homes instead of having children. And more governments, especially in developing nations, now support family planning programs to reduce population growth. China is one of the nations that has made great progress in reducing its population growth. China has already cut its rate of population growth by about one half since 1970. China now urges each family to have no more than one child. And it hopes to reach zero population growth, the number of births equaling the number of deaths, by the year 2000. Several nations in Europe already have fewer births than deaths. Experts said that these nations could face a serious shortage of workers in the future. And the persons who are working could face much higher taxes to help support the growing number of retired people. In Paragraph one, the sentence "Experts Dong have been concerned about such growth", the phrase "concerned about" is similar in meaning to______. A．worried about B．related to C．engaged in D．made a study of

Why do we go wrong about our friends, or our enemies？ Sometimes what people say hides their real meaning. And if we don't really listen we miss the feeling behind the words. Suppose someone tells you, "You're a lucky dog." That's friendly. But "lucky dog"？ There is a bit of envy in those words. Maybe he doesn't see it himself. But mentioning the "dog" puts you down a little. What he may be saying is that he doesn't think you ought to have your luck. "Just think of all the things you have to be thankful for" is another noise that says one thing and means another. It could mean that the speaker is trying to get you to see your problem as part of your life as a whole. But is he？ Wrapped up in this phrase is the thought that your problem isn't important. It's telling you to think of all the starving people in the world when you haven't got a date for Saturday night. How can you tell the real meaning behind someone's words？ One way is to take a good look at the person talking. Do his words fit the way he looks？ Does what he says agree with the tone of voice？ His posture (姿态)？ The look in his eyes？ Stop and think. (47) If you spend one minute thinking about the real meaning of what people say to you, you may avoid another mistake. This passage is mainly about______. A．how to interpret what people say B．what to do when you listen to others talking C．how to avoid mistakes when you communicate with people D．why we go wrong with people sometimes

There are several important families of languages in the world. For example, most of the languages of Europe are in one large family called Indo-European. The original (最初的) language of this family was spoken about 4,500 years ago. Many of the present languages of Europe and India are modern forms of the language of 4,500 yeas ago. Languages are always changing. The English of today is very different from the English of 500 years ago. Some even die out completely. About 1, 000 years ago English was a little-known relative of German spoken on one of the borders of Europe. If a language has a large number of speakers or if it is very old, there may be differences in the way it is spoken in different areas. That is, the language may have several dialects. Chinese is a good example of dialect differences. Chinese has been spoken for thousands of years by millions of speakers. Their differences between the dialects of Chinese are so great that speakers of Chinese from some parts of China cannot understand speakers from other parts. The first paragraph mainly tells us that ______. A．most people in the world speak Chinese B．there are thousands of languages in the world today C．man has much knowledge about languages D．some people know several languages

A.confident B.confidence C.interest D.interesting

Among isolated peoples ,who are not often reached by traders from outside ,commerce usually means barter ,which is a direct exchange of goods .Perhaps it is fish for vegetables or meat for baskets .For this kind of simple trading, money is not needed ,but there is often something that everyone wants ,such as salt to flavor food, shells for necklaces ,or iron and copper to make into tools. These things — salt ,shells or metals — are still used as money in out-of-the-way parts of the world today. Salt may seem rather a strange material to use as money ,but in countries where the food of the people is mainly vegetables ,it is often an absolute necessity .Cakes of salt ,stamped to show their value ,were used as money in Tibet until recent times, and they can still buy goods in parts of Africa. Cowrie seashells have been used as money at some time or another over the greater part of the Old World. These were collected mainly from the beaches of the Maldive Islands in the Indian Ocean ,and were traded to India and China. In Africa ,cowries were traded right across the continent from East to West .Four or five thousand went for one Maria Theresa dollar ,an Australian silver coin which was once accepted as currency (货币) in many parts of Africa. Metal was used as money in many parts of the world .Iron ,in lumps ,bars or rings is still used in many countries instead of money .It can either be exchanged for goods ,or made into tools or weapons. The early money of China ,apart from shells ,was of bronze ,often in flat ,round pieces with a hole in the middle ,called ‘ cash ’.The earliest of these are between three thousand and four thousand years old — older than the earliest coins of the eastern Mediterranean. Nowadays ,coins and notes have supplanted nearly all the more picturesque forms of money ,and although in one or two of the more remote countries people still store it for future use ,primitive money will soon be found only in museums. 1.Nowadays we think of money as() . A.pieces of metal or metallic paper B.made of either metal or paper C.some printed notes and papers D.round and flat sheets of paper 2.In some parts of the world a traveler might go hungry() . A.even if his money was of the local kind B.even if he had no coins or notes C.if he did not know the local rate of exchange D.even if he had plenty of ready money 3.What can we infer from the passage？ A.Isolated peoples exchange goods by means of barter. B.Salt cakes are taking the place of picturesque forms. C.Seashells could be traded with Maria Theresa dollars. D.The Chinese were among the earliest users of metal ‘ cash ’. 4.Primitive types of money will be used (). A.to replace more picturesque forms B.as exhibits to be shown in public C.at local country markets and shops D.as entrance tickets in museums

A．grumble B．retire C．meditate D．inquire E．require