视频投影仪(多媒体投影仪)是PC机输出视频信息的一种重要设备。以下关于视频投．影仪性

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     A volcanic eruption(喷发) in Iceland has sent ash across northern Europe. Airlines have stopped or

changed the flights across the Atlantic Ocean, leaving hundreds of passengers stuck in the airports.

     Grimsvotn is one of the largest and most active volcanoes in Europe. What makes Grimsvotn different

is that it lies under a huge glacier(冰川) of ice up to 12 meters thick. The hot volcano heats up the ice

above it, which then forms a layer(层) of water between the glacier and the volcano.

This layer of water puts pressure on the volcano, keeping it stable(稳定). As the water flows out from

under the glacier, the pressure lifts. The lava(岩浆) from the volcano then comes up to the surface. This

is exactly what happened today.

     Now, airlines have to make changes to their flights so as not to fly through the clouds of volcanic ash.

According to KLM one of Europe' s biggest airlines, airplanes cannot go under the cloud or over it.

Going through the cloud can result in ash getting stuck in the airplane' s engines, causing damage to the

plane.

     The eruption has also caused problems for animals in Iceland. The volcano left ash and sharp

glass-like rocks all over the countryside. Farmers are keeping their animals inside to stop them from

eating ash-covered glass or the sharp object.

1. What makes Grimsvotn different from other volcanoes?

A. It is below ice.            

B. It lies under the sea.

C. It is the largest volcano.    

D. Its lava affects the airlines.

2. What keeps Grimsvotn stable?

A. The slow flow of water.    

B. The low water temperature.

C. The thick glacier.         

D. The water pressure.

3. Which of the following is the result of the volcanic eruption?

A. People stop traveling in Europe.

B. Airlines suffer from the loss of planes.

C. It becomes dangerous for animals to eat outside.

D. Farmers have lost many of their animals.

4. This text is most probably taken from____

A. a research paper              

B. a newspaper report

C. a class presentation            

D. a geography textbook

市场营销管理哲学的核心是正确处理（）三者之间利益关系。

A.企业

B.中间商

C.顾客

D.社会

E.政府

什么是汽水共腾？

“阴阳者，造化之枢纽”中的“造化”意思是（）

A.创造

B.变化

C.福气

D.世界

E.大自然