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 teenagers―two males and one female―got an all-expenses-paid hike to five continents.
This trip didn't include any fivestar hotels or shopping fun. 18-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 and often uncomfortable accommodations,and they may encounter 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 Institute 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 loca?tions,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 scientists of Earthwatch Institute,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 teenagers went from country to country and witnessed different environmental dangers and challenges,they understood that so?lutions to important environmental issues start with the power of one person's ac?tions. They realized that each of them can make a difference.
1. These teenagers went on the journey around the world .
A. to experience the most serious environmental problems on the earth
B. to bring the kindness of America to the other parts of the world
C. to go sightseeing around the world
D. to call on more teenagers to join Earthwatch Institute
2. Which is 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.
3. 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 especially for school children
D. an organization that brings science to life for people concerned about the earth's environment
4. The underlined word "encounter" means" ".
A. agree B. meet C. begin D. trade
[文章大意]三个学生在Earthwatch Institute的赞助下，幸运地参加了一次环球环境考察之旅，最后他们意识到地球环境问题的解决需要每个人的参与。
1. A细节理解题。根据第四段第一句"The group went all around the world to get a close look at the most pressing envi?ronmental issues of our time."可知，这次旅行是为了近距离地感受我们现在所面临的那些迫切需要解决的环境问题，故答案为A.
2. C细节理解题。根据短文第二段可知，这次旅行充满了困难甚至危险，所以他们要付出很大的努力才能完成任务，包括获取环境信息等。
3. D推理判断题，根据第三段最后一句及Earthwatch Insti?tute所赞助的这次活动可推知，Earthwatch Institute是一个向关心地球环境的人们普及环境科学知识的组织。
4. B词义猜测题。根据下文可知，encounter是"遇到，碰到"
开心蛙状元测试卷系列答案科目：高中英语 来源： 题型：
4. 他们很快就来到了一个遭到破"坏的房子旁边，在这个房子的面前坐着一个小男孩。
Soon they got to a damaged house, .(使用完全倒装结构)
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The African elephant,the largest land animal remaining on the earth,is of great importance to African ecosystem (生态系统) .Unlike other animals,the African ele?phant is to a great extent the builder of its environment. As a big planteater,it largely shapes the forest and sa?vanna(稀树草原) surroundings in which it lives,therefore setting the terms of existence for millions of other animals that live in its habitat (柄息地) .
It is the elephant's great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the300 pounds of plants it must have every day,it kills small trees and underbushes,and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas. In these open spaces are numerous plants in various stages of growth that attract a variety of other planteaters.
Take the rainforests for example. In their natural state,the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants,elephants make open spaces,allowing new plants to grow on the forest floor. In such situations,the forests become suitable for large hoofed planteaters to move around and for small planteaters to get their food as well.
What worries scientists now is that the African ele?phant has become an endangered species. If the elephant disappears,scientists say,many other animals will also disappear from vast areas of forest and savanna,greatlychanging and worsening the whole ecosystem.
14. What is the passage mainly about?
A. Disappearance of African elephants.
B. Forests and savannas as habitats for African ele?phants.
C. The effect of African elephants' search for food.
D. The eating habit of African elephants.
15. What does the underlined phrase" setting the terms" most probably mean?
A. Fixing the time.
B. Worsening the state.
C. Improving the quality.
D. Deciding the conditions.
16. What do we know about the open spaces in the passage?
A. They result from the destruction of rainforests.
B. They provide food mainly for African elephants.
C. They are home to many endangered animals.
D. They are attractive to planteating animals of dif?ferent kinds.
17. The passage is developed mainly by .
A. showing the effect and then explaining the causes
B. pointing out similarities and differences
C. describing the changes in space order
D. giving examples
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4. 我一直忙于学习，以至于没有时间去进行社交活动。
I have been I haven't had time for social activities, (so...that...)
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