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【单选题】
The atmosphere in the classroom was so energized that students didn’t mind working very hard.
A.
a mood or feeling in a particular location.
B.
the mixture of gases that surrounds the Earth.
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】___is NOT mentioned as one of the activities of the Kids in Nature program at the Sedgwick reserve.
A.
Restoring woodlands
B.
Playing computer games
C.
Writing reports about plants
【单选题】If it is a hands-on, interactive show, students are motivated to participate in the demonstrations.
A.
involving several speakers at the same time.
B.
involving the input or actions of audience members.
【单选题】We need to choose a new site for that research project because the current building is too far away from our labs.
A.
a place or location.
B.
a plan or idea.
【单选题】Because of the old building’s historical value, the city decided to restore it and bring it back to life.
A.
repair; return to its original condition.
B.
tear down and replace with something better.
【单选题】When we visit a science exhibit related to elasticity, we expect to find a demonstration on how an object can stretch and bend.
A.
a written report.
B.
a show or display.
【单选题】With all of the resources available in the library, students can find enough information for their reports.
A.
raw materials such as wood or metal.
B.
materials that can be used to help achieve a goal.
【单选题】The collaboration between environmental organizations and governments is extremely important for the success of ecological programs.
A.
the act of working together.
B.
the act of working independently or separately.
【单选题】The coordinator of the program was responsible for bringing workers together while developing that project.
A.
a person who manages.
B.
a person who investigates or inspects Where can work, education, and fun overlap?
【单选题】Schools that are famous for research such as Oxford University and the University of California pioneer ideas and often discover ways to cure diseases and solve problems.
A.
travel to new areas.
B.
be the first to do or try something.
【单选题】When the result of an experiment has an impact on science, it influences scientific ideas and may change our perspectives.
A.
a collision or accident with somebody or something.
B.
a powerful effect of one thing on something else.