The movie has a great ____________ on me.

Geologists have been studying volcanoes for a long time. Though they have learned a great deal, they still have not discovered the causes of volcanic action. They know that the inside of the earth is very hot, but they are not sure exactly what causes the great heat. Some geologists have thought that the heat is caused by the great pressure of the earth’s outer layers. Or the heat may be left from the time when the earth was formed. During the last sixty years scientists have learned about radium, uranium, thorium and other radioactive elements. These give ont heat all the time as they change into other elements. Many scientists now believe that much of the heat inside the earth is produced by radioactive element.

Whatever the cause of the heat may be, we do know that the earth get hotter the farther down we dig. In deep mines and oil wells the temperature rises about 1 for each 50 feet. At this rate the temperature 40 miles below the earth’s surface would be over 4,0007 This is much hotter than necessary to melt rock. However, the pressure of the reek above keeps most materials from melting at their usual melting points. Geologists believe that the rock deep in the earth may be plastic, or putty-like. In other words, the rock yields slowly to pressure but is not liquid. But if some change in the earth's crust re leases the pressure, the rock melts. Then the hot, liquid rock can move up toward the surface.

When the melted rock works its way close to the earth crust, a volcano may be formed. The melted rock often contains steam and other gases under great pressure. If the rock above often gives way, the pressure is released. Then the sudden expansion of the gases causes explosions. These blow the melted rock into pieces of different sizes and shoot them high in the air. Here they cool and harden into volcanic ash and cinders. Some of this material falls around the hole made in the earth's surface. The melted rock may keep on rising and pour out as lava. In this way, volcanic ash, cinders and lava build up the cone-shaped mountains that we call volcanoes.

The subject of this passage is the ______.

A．formulation of volcanoes

B．results of volcanic actions

C．work of geologists

D．interior of the earth

Geologists have been studying volcanoes for a long time. Though they have learned a great deal, they still have not discovered the cause of volcanic action. They know that the inside of the earth is very hot, but they are not sure exactly what causes the great heat. Some geologists have thought that the heat is caused by the great pressure of the earth's outer layers. Or the heat may be left from the time when the earth was formed. During the last sixty years scientists have learned about radium, uranium, thorium, and other radioactive elements. These give out heat all the time as they change into other elements. Many scientists now believe that much of the heat inside the earth is produced by radioactive elements.

Whatever the cause of the heat may be, we do know that the earth gets hotter the farther down we dig. In deep mines and oil wells the temperature rises about 1 F for each 50 feet. At this rate the temperature 40 miles below the earth' s surface would be over 4,000 F, This is much hotter than necessary to melt rock. However, the pressure of the rock above keeps most materials from melting at their usual melting points. Geologists believe that the rock deep in the earth may be plastic, or puttylike. In other words, the rock yields slowly to pressure but is not liquid. But if some change in the earth's crust releases the pressure, the rock melts. Then the hot, liquid rock can move up toward the surface.

When the melted rock works its way close to earth's crust, a volcano may be formed. The melted rock often contains steam and other gases under great pressure. If the rock above gives way, the pressure is released. Then the sudden expansion of the gases causes explosions. Theses blow the melted rock into pieces of different sizes and shoot them high in the air. Here they cool and harden into volcanic ash and cinders. Some of the material falls around the hole made in the earth's surface. The melted rock may keep on rising and pour out as lava. In this way, volcanic ash, cinders and lava build up the cone-shaped mountains that we call volcanoes.

The subject of this passage is the______.

A．formation of volcanoes

B．results of volcanic action

C．work of geologists

D．interior of the earth

The American girl liked the hotel-keeper because he didn't treat them as foreigners.

A．Y

B．N

C．NG

Over the past several decades, the U. S. , and Canada and Europe have received a great deal of media and even research attention over unusual phenomena and unsolved mysteries. These includes UFOs as well as sightings and encounters with "nonhuman creatures" such as Bigfoot and the Loch Ness monster. Only recently has Latin America begun to receive such attention as well. Although the mysteries of the Aztec, Mayan, and Inca civilizations have been known for centuries, now the public is also becoming aware of unusual, paranormal phenomena in countries in Peru.

The Nazca "lines" of Peru were discovered in 1930s. These lines are deeply carved into a flat, stony plain, and from about 300 intricate pictures of animals such as birds, a monkey, and a lizard. Seen at ground level, the designs are a jumbled senseless mess. The images are so large that they can only be viewed as a height of 1,000 feet—meaning from an aircraft. Yet there were no aircraft in 300 B. C. , when it is judged the designs were made. Nor were there then, or are there now, any nearby mountain ranges from which to view them. So how and why the native people of Nazca create these marvelous designs? One answer appeared in 1969, when the German researcher and writer Erich von Daniken proposed that the lines were drawn by extraterrestrials as runways for their aircraft. The scientist community did not take long to scoff at and abandon von Daniken's theory. Over the years several other theories have been put forth, but none has been accepted by the scientific community.

Today there is a new and heightened interest in the Nazca lines. It is a direct result of the creation of the Internet. Currently there are over 60 sites dedicated to this mystery from Latin America's past, and even respected scientists have joined the discussion through e-mail and chat rooms.

Will the Internet help explain these unsolved mysteries? Perhaps it is a step in the right direction.

Which of the following statements is INCORRECT?

A．Latin America has long received attention for unusual phenomena.

B．Public attention is now directed towards countries like Peru.

C．Public interest usually focuses on North America and Europe.

D．Some ancient civilizations have unsolved mysteries.

Over the past several decades, the U. S. , and Canada and Europe have received a great deal of media and even research attention over unusual phenomena and unsolved mysteries. These includes UFOs as well as sightings and encounters with "nonhuman creatures" such as Bigfoot and the Loch Ness monster. Only recently has Latin America begun to receive such attention as well. Although the mysteries of the Aztec, Mayan, and Inca civilizations have been known for centuries, now the public is also becoming aware of unusual, paranormal phenomena in countries in Peru.

The Nazca "lines" of Peru were discovered in 1930s. These lines are deeply carved into a flat, stony plain, and from about 300 intricate pictures of animals such as birds, a monkey, and a lizard. Seen at ground level, the designs are a jumbled senseless mess. The images are so large that they can only be viewed as a height of 1,000 feet—meaning from an aircraft. Yet there were no aircraft in 300 B. C. , when it is judged the designs were made. Nor were there then, or are there now, any nearby mountain ranges from which to view them. So how and why the native people of Nazca create these marvelous designs? One answer appeared in 1969, when the German researcher and writer Erich von Daniken proposed that the lines were drawn by extraterrestrials as runways for their aircraft. The scientist community did not take long to scoff at and abandon von Daniken's theory. Over the years several other theories have been put forth, but none has been accepted by the scientific community.

Today there is a new and heightened interest in the Nazca lines. It is a direct result of the creation of the Internet. Currently there are over 60 sites dedicated to this mystery from Latin America's past, and even respected scientists have joined the discussion through e-mail and chat rooms.

Will the Internet help explain these unsolved mysteries? Perhaps it is a step in the right direction.

Which of the following statements is INCORRECT?

A．Latin America has long received attention for unusual phenomena.

B．Public attention is now directed towards countries like Peru.

C．Public interest usually focuses on North America and Europe.

D．Some ancient civilizations have unsolved mysteries.