. The cloud never hides the sun. The truth will be known to all . A．on time B．in time C．by time D．from time to time 题目和参考答案——青夏教育精英家教网—

A volcanic eruption 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 airports.
Grimsvom is one of the largest and most active volcanoes in Europe. What makes Grimsvom different is that it lies under a huge glacier（冰川）of ice up to 12 maters 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, 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 grass to the sharp object.
【小题1】What makes Grimsvom different from other volcanoes?

A．It is below ice.	B．It lies under the sea
C．It is the largest volcano	D．It is lava affects the airlines

【小题2】What keeps Grimsvom still?

A．The slow flow of water	B．The low water temperature
C．The thick glacier	D．The water pressure

【小题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

【小题4】This text is most probably taken from_____

A．a research paper	B．a newspaper report
C．a class presentation	D．a geography textbook.

A volcanic eruption 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 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 metres thick. The hot volcano heats up the ice above it, which then forms a layer(层)

of water between glacier and the volcano, keeping it stable. 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 is happening 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 eating ash-covered grass or the sharp objects.

1.What makes Grimsvotn different from other volcanoes?

A．It is under the sea. B．Its lava affects the airlines.

C．It is the largest volcano. D．It is below ice.

2.What keeps Grimsvotn still?

A．The slow flow of water.. B．The thick glacier.

C．The water pressure. D．The low water temperature.

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

A．It becomes dangerous for animals to eat outside.

B．Famers have lost many of their animals.

C．Airlines suffer from the loss of planes.

D．People stop traveling in Europe.

4.how many passengers were forced to stay in the airport?

A．thousands of passengers B．hundreds of passengers

C．ten thousands of passengers D．20000 of passengers

B

Particles from car exhausts generate more persistent clouds but less rain, new research suggests. Furthermore, putting more of these particles into the atmosphere reduces the low-level winds, which could reduce the amount of wind power available in very polluted regions. The dry but populated regions may therefore suffer a triple blow as a result of vehicle pollution：less water, less hydropower and less wind energy.

Scientists studied the effects of aerosol（浮质）pollution from cars and industry. They correlated satellite data on wind speeds and the amount of aerosol particles in the atmosphere above the South Coast Basin in California and above China. Results showed that higher concentrations of aerosols were closely associated with slower ground winds. Scientists then used computer models to support the idea that there was a cause and effect relationship behind this correlation.

Particles floating in the atmosphere block energy from the Sun, preventing it from warming the surface of the Earth. Cooler surface temperatures during the day means the low—level and slow moving air does not rise up and mix with the faster winds at higher altitudes. Slower winds also induce less evaporation from oceans, rivers and lakes. And finally, once clouds have formed, they store less moisture in the form of rain. This is because raindrops form around small particles— dust, for instance, or pollution. With more particles in the atmosphere, it takes longer for enough water to condense（凝结）onto a particle to form a raindrop. And if the cloud of fine droplets（小滴）moves to a drier area before its would-be rain can rail, the moisture evaporates once more and the cloud disappears.

Scientists note their new work does not contradict previous findings that suggest global warming might lead to more tropical storms, because there is far less particulate（微粒的）pollution over the oceans.

60. The first paragraph mainly talks about .

A. the results of vehicle pollution

B. an introduction to particles from car exhausts

C. less wind energy in polluted regions

D. less water caused by vehicle pollution

61. From this passage we can learn that .

A. scientists supported their idea by using material models

B. the new study is contrary to the previous findings

C. if there are more particles in the atmosphere, there will be more raindrops

D. there is a cause and effect relationship between wind speeds and particle pollution

62. The underlined word “induce” in Paragraph 3 most probably mean _ .

A. reduce B. persuade C. cause D. produce

63. What’s the best title for the passage?

A. Pollution and Global Warming B. Car, Wind and Rain

C. Industry Pollution D. How Rain Forms

Most rain forests lie close to the equator(赤道),where the climate is often mild and there are long hours of sunshine.The warmth of the land heats the air above,causing it to rise and tiny drops of water to fall as rain.The rainfall can reach at least 98 inches a year.This wet,warm world with plenty of sunlight is perfect for plants to grow,so the trees grow fast with green leaves all the year round.The trees themselves also have an effect on the climate.They gather water from the soil and pass it out into the air through their leaves.The wet air then forms clouds,which hang over the treetops like smoke.These clouds protect the forest from the daytime heat and night-time cold of nearby deserts,keeping temperatures fit for plant growth.

Rain forests slightly farther away from the equator remain just as warm,but they have a dry season of three months or more when little rain falls.Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon(雨季) begins.Thus these areas are known as the “monsoon forest”.

Another type of rain forest grows on tropical mountains.It is often called the “cloud forest” because clouds often hang over the trees like fog.

The rain forest is the ideal place for the growth of many different trees.Most of them depend on animals to eat their fruits and spread their seeds.When the fruits are eaten,the seeds inside them go undamaged through animals’ stomachs and are passed out in their droppings.The seeds lying on the forest floor then grow into new trees.

1.The climate of the rain forests near the equator is _______.

A．mild,wet and windy	B．hot,rainy and foggy
C．hot,wet and cloudy	D．warm,wet and sunny

2.We can learn from the passage that _______.

A．tree leaves are green all the time in the monsoon forest

B．there is a dry season in the cloud forest on tropical mountains

C．clouds help the plants in the rain forest near the deserts to grow

D．the formation of climate in the rain forest has little to do with the trees

3.According to the passage,_______ play the most important role in the spreading of seeds.

A．animals

B．droppings

C．fruits

D．winds

4.This passage is most likely to be found in _______.

A．a travel guide	B．a story book
C．a technical report	D．a geography book

Most rain forests lie close to the equator(赤道),where the climate is often mild and there are long hours of sunshine.The warmth of the land heats the air above,causing it to rise and tiny drops of water to fall as rain.The rainfall can reach at least 98 inches a year.This wet,warm world with plenty of sunlight is perfect for plants to grow,so the trees grow fast with green leaves all the year round.The trees themselves also have an effect on the climate.They gather water from the soil and pass it out into the air through their leaves.The wet air then forms clouds,which hang over the treetops like smoke.These clouds protect the forest from the daytime heat and night-time cold of nearby deserts,keeping temperatures fit for plant growth.

Rain forests slightly farther away from the equator remain just as warm,but they have a dry season of three months or more when little rain falls.Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon(雨季) begins.Thus these areas are known as the “monsoon forest”.

Another type of rain forest grows on tropical mountains.It is often called the “cloud forest” because clouds often hang over the trees like fog.

The rain forest is the ideal place for the growth of many different trees.Most of them depend on animals to eat their fruits and spread their seeds.When the fruits are eaten,the seeds inside them go undamaged through animals’ stomachs and are passed out in their droppings.The seeds lying on the forest floor then grow into new trees.

1.The climate of the rain forests near the equator is _______.

A.mild,wet and windy B.hot,rainy and foggy

C.hot,wet and cloudy D.warm,wet and sunny

2.We can learn from the passage that _______.

A.tree leaves are green all the time in the monsoon forest

B.there is a dry season in the cloud forest on tropical mountains

C.clouds help the plants in the rain forest near the deserts to grow

D.the formation of climate in the rain forest has little to do with the trees

3.According to the passage,_______ play the most important role in the spreading of seeds.

A.animals B.droppings C.fruits D.winds

4.This passage is most likely to be found in _______.

A.a travel guide B.a story book

C.a technical report D.a geography book

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