In many areas “atoll” clouds (clouds of vertical development) are produced over small islands. These are the result of（）.

A . 3 nm B . 6 nm C . 12 nm D . 25 nm

A . one B . two C . three D . four

A . Fish B . Fishing C . Fisher D . Fishery

A . Florida B . Louisiana C . Alaska

A . The SAFTA B . The NAFTA C . The EFTA D . The APEC

A . Alert log file B . Archived redo log files C . Control file autobackups D . Server Parameter file (SPFILE) E . Recovery Manager (RMAN) backup piece

A . Anchor B . Anchoring C . Anchored D . Being anchored

A . getting B . setting C . being D . having

A．serve B．set C．attract D．absorb

Conventional computer models of the atmosphere have limited value in predicting short lived local storms like the Edmonton tornado, because the available weather data are generally not detailed enough to allow computers to study carefully the subtle (微妙的)atmospheric changes that come before these storms. In most nations, for example, weather - balloon observations are taken just once every twelve hours at locations typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation intensive approach needed for accurate, very short - range forecasts, or "Now casts", was not feasible. The cost of e quipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were hard to overcome. Fortunately, scientific and technological advances have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observation over large regions at a relatively low cost. Communications satellites can transmit data around the world cheaply and instantaneously, and modem computers can quickly compile and analyze this large volume of weather information. Meteorologists(气象学者) and computer scientists now work together to design computer programs and video equipment capable of transforming raw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, now casting is becoming a reality. The word "exceeded" in paragraph 1 most probably means ______. A．added up to B．were more than C．were about D．were less than

The human body demands that the amount of salt in the blood always stay the same.When the body does not get enough salt, it protects itself by letting less salt leave the body in urine and sweat. But it cannot reduce this output to zero. Some salt is always escaping. On a completely saltless diet, like that of some people in Africa, the body steadily loses small amounts of salt through the kidneys (肾) and sweat glands (腺). It then tries to ad-just to this loss by speeding up its secretion (分泌) of water. In this way, the body attempts to keep the amount of salt in the blood at the necessary level. The result is a slow drying up of body and, finally, death. The person dies of thirst. In cases where there is little or no water to drink, the body tries to do the opposite thing. Again, it must keep the salt level in the blood constant. Because it has little water, it attempts to stop water from leaving the body and to increase its secretion of salt. But, as with the escaping salt, it cannot be completely successful. Some water still leaves and the person eventually dies of thirst. In short, the body's normal needs for salt and for water are both parts of the same important need to keep the salt level in the blood constant. Some African people once drank animal urine______. A．when they were going to die B．because they were thirsty C．because there was little salt D．because they were short of water

Some of the major illnesses and conditions that aspirin or aspirin-like drugs might help prevent are. Alzheimer's disease, diabetes-related heart disease, heart attack, cancer and antibiotic-induced hearing loss. The passage mainly discusses the effects of A．health. B．aspirin. C．hearing loss. D．heart attack.

A．ignores the actual situation B．is not based on the right perspective C．only focuses on an integrated core of common learning D．gives priority to the cultivation of a global vision among students

Despite the different language, traveling across Europe has never been so simple. Just five years ago, if you wanted to visit Germany in the north and Spain in the south in one trip, you had to wait for weeks to apply for different visas(签证) from the two countries. You also needed a calculator(计算器) because both countries had different money. Today, with a Schengen Visa issued(签发)by any member countries, you Can travel across 15 European countries without stopping. Since 2002, within most of the EU, there is now just one type of money called the Euro. The Euro was designed to be the only money in the EU, and already makes it easier to shop around. If you drive, your driving license and car insurance policy are valid (有效的) in the other countries. And you can use your mobile phone everywhere. All the countries in the continent are melting(融于) into a united Europe under the EU. For Europeans and visitors the result is that it is more convenient to travel back and forth between the different countries. What does the writer mean by saying" Now many European countries ,are expected to follow this ______. example" (Lines 2 - 3, Para. 1 )？ A．More signs will be set up for Chinese in other European countries. B．Chinese is now an important language in Europe. C．More Chinese people will go to travel across Europe. D．More Europeans have a desire to know more about China.

A．plumber B．room C．maintenance D．electrician

A．A.2 B．B.3 C．C.4 D．D.6