Have you ever thought, “I wish I could take a year off and just travel around the world”? Well, three lucky American teenagers were able to do just that. The teens—two males and one female--got an all-expenses paid, yearlong hike to five continents.

This trip didn’t include any five-star hotels or shopping funs. Eighteen-year-old Jamie Fiel from Keller, Texas, 17-year-old Arsen Ewing from Canyon, California, and 16-year-old Tyler Robinson from Lincoln, Massachusetts, didn’t expect fancy treatment. They signed up for the experience of a lifetime, which included hard work, often uncomfortable accommodations, and encounters with some of nature’s most dangerous animals and environments.

Jamie, Arsen, and Tyler were among hundreds of high school kids nominated by their science teachers to take this trip. Earthwatch Institute sponsored (赞助) this adventure. Each year, Earthwatch employs thousands of volunteers worldwide to help with scientific research projects.

The group went all around the world to get a close look at the most pressing environmental issues of our time. Their assignments were as varied as their locations, and included measuring and attending pink flamingos in Kenya’s Great Rift Valley, and tracking giant sea turtles in Costa Rica.

As they worked with the Earthwatch scientists, Jamie, Arsen, and Tyler began to understand that we are at a critical moment in the life of our planet. Time for change is running out. As the teens went from country to country and witnessed different environmental dangers and challenges, they understood that solutions to important environmental issues start with the power of one person's actions. They realized that each of them can make a difference.

These teenagers went on the journey around the world _____.

A. to experience the most serous environmental problems on the earth

B. to bring the kindness of America to the other parts of the world

C. to go on sightseeing around the world

D. to call on more teenagers to join Earthwatch Institute

What’s true about their journey?  

A. They had to pay for their journey on their own expense.

B. They often had to move from one hotel to another.

C. They had to take great pains to collect environmental information.

D. They received a warm welcome every time they arrived at a new place.

It can be inferred that Earthwatch Institute could be _____.

A. an international university that takes in students from all over the world

B. a TV station that makes programmes on the beautiful scenery of the earth

C. a travel agency that organizes adventure trips specially for school children

D. an organization that brings science to life for people concerned about earth’s environment

What did they these teenagers learn from the journey?

A. It was high time that people protected the environment.

B. Long journey was not suitable for school children.

C. It should take the whole world to help the children.

D. Environmental problems can be solved if school children take part.

Have you ever thought, “I wish I could take a year off and just travel around the world”?

Well,three lucky American teenagers were able to do just that．The teens—two males and one female--got an all-expenses paid, yearlong hike to five continents.

    This trip didn’t include any five-star hotels or shopping funs．Eighteen-year-old Jamie Fiel from Keller, Texas, 17-year-old Arsen Ewing from Canyon, California, and 16-year-old Tyler Robinson from Lincoln, Massachusetts, didn’t expect fancy treatment．They signed up for the experience of a lifetime, which included hard work, often uncomfortable accommodations, and encounters with（遭遇） some of nature’s most dangerous animals and environments.

Jamie, Arsen, and Tyler were among hundreds of high school kids nominated by their science teachers to take this trip．Earthwatch Institute sponsored this adventure．Each year, Earthwatch employs thousands of volunteers worldwide to help with scientific research projects．

The group went all around the world to get a close look at the most pressing environmental issues of our time．Their assignments were as varied as their locations, and included measuring and attending pink flamingos in Kenya’s Great Rift Valley, and tracking giant sea turtles in Costa Rica.

As they worked with the Earthwatch scientists, Jamie, Arsen, and Tyler began to understand that we are at a critical moment in the life of our planet．Time for change is running out．As the teens went from country to country and witnessed different environmental dangers and challenges, they understood that solutions to important environmental issues start with the power of one person's actions．They realized that each of them can make a difference.

These teenagers went on the journey around the world _____.

    A．to experience the most serous environmental problems on the earth

    B．to bring the kindness of America to the other parts of the world

    C．to go on sightseeing around the world

    D．to call on more teenagers to join Earthwatch Institute

What’s true about their journey?

    A．They had to pay for their journey at their own expense.

    B．They often had to move from one hotel to another.

    C．They had to take great pains to collect environmental information.

    D．They received a warm welcome every time they arrived at a new place.

It can be inferred that Earthwatch Institute could be _____．

    A．an international university that takes in students from all over the world

    B．a TV station that makes programmes on the beautiful scenery of the earth

    C．a travel agency that organizes adventure trips specially for school children

    D．an organization that brings science to life for people concerned about the earth’s environment

What did they these teenagers learn from the journey?

    A．It was high time that people protected the environment.

    B．Long journey was not suitable for school children.

    C．It should take the whole world to help the children.

    D．Environmental problems can be solved if school children take part.

Have you ever thought, “I wish I could take a year off and just travel around the world”? Well, three lucky American teenagers were able to do just that. The teens—two males and one female--got an all-expenses paid, yearlong hike to five continents.

This trip didn’t include any five-star hotels or shopping funs. Eighteen-year-old Jamie Fiel from Keller, Texas, 17-year-old Arsen Ewing from Canyon, California, and 16-year-old Tyler Robinson from Lincoln, Massachusetts, didn’t expect fancy treatment. They signed up for the experience of a lifetime, which included hard work, often uncomfortable accommodations, and encounters with some of nature’s most dangerous animals and environments.

Jamie, Arsen, and Tyler were among hundreds of high school kids nominated by their science teachers to take this trip. Earthwatch Institute sponsored (赞助) this adventure. Each year, Earthwatch employs thousands of volunteers worldwide to help with scientific research projects.

The group went all around the world to get a close look at the most pressing environmental issues of our time. Their assignments were as varied as their locations, and included measuring and attending pink flamingos in Kenya’s Great Rift Valley, and tracking giant sea turtles in Costa Rica.

As they worked with the Earthwatch scientists, Jamie, Arsen, and Tyler began to understand that we are at a critical moment in the life of our planet. Time for change is running out. As the teens went from country to country and witnessed different environmental dangers and challenges, they understood that solutions to important environmental issues start with the power of one person's actions. They realized that each of them can make a difference.

These teenagers went on the journey around the world _____.

         A．to experience the most serous environmental problems on the earth

         B．to bring the kindness of America to the other parts of the world

         C．to go on sightseeing around the world

         D．to call on more teenagers to join Earthwatch Institute

What’s true about their journey?

         A．They had to pay for their journey on their own expense.

         B．They often had to move from one hotel to another.

         C．They had to take great pains to collect environmental information.

         D．They received a warm welcome every time they arrived at a new place.

It can be inferred that Earthwatch Institute could be _____.

         A．an international university that takes in students from all over the world

         B．a TV station that makes programmes on the beautiful scenery of the earth

         C．a travel agency that organizes adventure trips specially for school children

         D．an organization that brings science to life for people concerned about earth’s environment

      "Have you ever been out on a boat and felt it lifted up by a wave? Or have you jumped in the water and felt the rush of energy as waves came over you?" asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh. "There is certainly a lot of energy in waves," he said.

       Scientists are working to use that energy to make electricity. Most waves are created when winds blow across the ocean. "The wind starts out by making little ripples (涟漪) , but if they keep on blowing, those ripples get bigger and bigger and turn into waves," Taylor said. " Waves are one of nature 's ways of picking up energy and then sending it off on a journey.

     When waves come toward the shore, people can set up dams to block the water and send it through a large wheel called a turbine (涡轮机) . The turbine can then power an electrical generator to produce electricity.

     "The resource is huge," said Janet Swain of the Worldwatch Institute. "We will never run out of wave power. " Besides, wave energy does not create the same pollution as other energy sources, such as oil or coal. Oceans cover three-quarters of the Earth's surface - that would make wave power seem ideal for creating energy throughout the world, though there are some weak points yet to overcome.

      Swain said that wave power still costs too much money. She also said that its effects on sea animals are still unknown. What is more, wave power could affect fishing and boat traffic.

      Traditional sources of energy like oil and gas may someday run out. " Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is rising rapidly throughout the world," Swain said. In the future when you turn on a light, an ocean wave could be providing the electricity!

64. The writer uses the two questions at the beginning of the passage to _______.

A. test the readers' knowledge about waves          B. draw the readers' attention to the topic

C. show Jamie Taylor's importance                            D. invite the readers to answer them

65. The underlined phrase "picking up" (paragraph 2) is closest in meaning to _______.

A. starting again            B. speeding up              C. gathering           D. improving

66. We can make better use of wave energy if we _______.

A. shorten its journey to thousands of homes       B. build more small power stations on the oceans

C. reduce the cost of turning it into electric power

D. quicken the steps of producing electricity

67. It can be inferred that some day we might not worry about ________.

A. air pollution             B. our boat traffic         C. our power supply             D. our supply of sea fish

       "Have you ever been out on a boat and felt it lifted up by a wave? Or have you jumped in the

water and felt the rush of energy as waves came over you?" asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh．"There is certainly a lot of energy in waves," he said．Scientists are working to use that energy to make electricity．Most waves are created when

winds blow across the ocean．"The wind starts out by making little ripples (涟漪) , but if they

keep on blowing, those ripples get bigger and bigger and turn into waves," Taylor said．" Waves

are one of nature 's ways of picking up energy and then sending it off on a journey.

       When waves come toward the shore, people can set up dams to block the water and send it

through a large wheel called a turbine (涡轮机) ．The turbine can then power an electrical
generator to produce electricity .

       "The resource is huge," said Janet Swain of the World watch Institute．"We will never run out of wave power．" Besides, wave energy does not create the same pollution as other energy sources, such as oil or coal．Oceans cover three-quarters of the Earth's surface - that would make wave power seem ideal for creating energy throughout the world, though there are some weak points yet to overcome．

       Swain said that wave power still costs too much money．She also said that its effects on sea animals are still unknown．What is more, wave power could affect fishing and boat traffic.

       Traditional sources of energy like oil and gas may someday run out．" Demand for energy to

power our TVs and computers, drive our cars, and heat and cool our homes is rising rapidly throughout the world," Swain said．In the future when you turn on a light, an ocean wave could be

providing the electricity!

64．The writer uses the two questions at the beginning of the passage to _______.

       A．test the readers' knowledge about waves

       B．draw the readers' attention to the topic

       C．show Jamie Taylor's importance

       D．invite the readers to answer them
65．The underlined phrase "picking up" (paragraph 2) is closest in meaning to _______.

       A．starting again       B．speeding up         C．gathering             D．improving
66．We can make better use of wave energy if we _______.

       A．shorten its journey to thousands of homes

       B．build more small power stations on the oceans

       C．reduce the cost of turning it into electric power

       D．quicken the steps of producing electricity

67．It can be inferred that some day we might not worry about ________.

       A．air pollution                                         B．our boat traffic    

       C．our power supply                                D．our supply of sea fish