As of 2014, there are 2 acts who won 6 diamond awards. The two acts are______.

A . scavenging air ports；exhaust ports B . inlet ports；scavenging air ports C . scavenging air ports；inlet ports D . exhaust ports；inlet port

A . BDE B . UDE C . AEP D . ADE

A . the lack of cooling effect on heated materials B . that it cannot be used in a dead ship situation with no electrical power to the CO pump C . that it breaks down under extreme heat to form poisonous gases D . there is no effect on a class A fire even in an enclosed space

A.Desired vendor B.Quota arrangement C.Info record D.Contract 此题为多项选择题。

此题为多项选择题。

A．One B．Two C．Three D．Four

A、that B、whether C、if D、about which

Another way is energy conservation (节能 ), which means using energy more efficiently (有效地 ). In some very cold countries people build special houses to save energy. They place materials between the inside and the outside of the walls of the house to keep the cold out and the warmth in. The house is heated by the lights, the body heat of the people and the other equipment in it. Finally, renewable energy sources are used even though they are often expensive to develop. One form. of these is geothermal energy. In certain parts of the world the temperature of the earth increases thirty degrees centigrade with each kilometer down. At six kilometers, therefore, it rises to nearly two hundred degrees. To get the heat, water is pumped (压;抽 ) down into the rocks and back up to the surface. Heat from the earth is already used in certain countries. 1、How many ways of dealing with the energy problem are discussed in the text？ () A、Two. B、Three. C、Four. D、Five. 2、From the text we learn that coal(). A、is quite easy to produce B、is not used most efficiently C、is the most common source of energy D、could be renewed only by new technology 3、The writer tells about the "special houses" because they(). A、show the excellent skills of the builders B、serve as an example of energy conservation C、are heated by different sources of energy D、are warmer than other types of houses 4、The underlined words "geothermal energy" in the third paragraph mean (). A、renewable source B、 underground source C、 heat inside the earth D、 temperature of the earth 5、At a place where the surface temperature is 15°C, how deep do you have to dig so as to get a temperature of 75 °C ？ () A、One km. B、 Two km. C、 Three km. D、 Four km

(19)

A．in badly B．badly in need C．urgent in need D．in urgently need

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．exchange rate arrangement with no separate legal tender B．conventional pegged arrangement C．crawling peg arrangement D．crawl-like arrangement