单选题 The science behind solar (太阳的) energy is not new. But Sheridan Community Schools is the first school district in Indiana to be completely solar-powered. The district finished installing solar panels (太阳能板) for all three of its schools in 2016. Some of the panels can turn to follow the sun across the sky.
Sheridan"s solar push is part of a trend. In 2008, fewer than 1,000 schools used solar power. By 2014, there were 3,727 schools with solar panels in the US. This data comes from a report by the Solar Foundation, an organization that promotes the use of solar power. Roxie Brown, a program director there, says that the number of Schools with solar panels has continued to rise since 2014.
（79） Solar power has some obvious advantages over other energy sources. Sunlight is a renewable (可再生的) resource, which means it won"t run out. Solar panels don"t harm the environment. Also sunlight is free. So by using solar power, schools can save money on energy costs over time.
But switching to solar power isn"t always easy. Solar panels can be expensive to install. Sherdan Community Schools had to borrow money to pay for its solar transition. （80） The panels also take up space. But for many schools, going solar is worth it.
The use of solar energy can also help students learn about electricity and environmental issues. Teachers at schools that use solar power often incorporate it into their science lessons. The kids talk about it in the classroom. Then they can look at it in action. According to Brown, the educational impact of solar panels is "the most compelling reason" for schools to install them.
Brown hopes the panels will give Sheridan students a global perspective. "The world is bigger than the boundaries of their school district," he says. "They"re doing things to help the world as a whole."

单选题 Sheridan Community Schools consists of ______ schools.

单选题 According to the passage, solar energy has the following benefits EXCEPT that ______.

【正确答案】 C

【答案解析】[解析] 根据第三段“Solar power has some obvious advantages over other energy sources. Sunlight is a renewable resource, which means it won"t run out. Solar panels don"t harm the environment. Also, sunlight is free. So by using solar power, schools can save money on energy costs over time. ”可知，太阳能具有以下优势：可再生、不会破坏环境、节省资金。所以选项A、B、D表述正确。根据第四段前两句“But switching to solar power isn"t always easy. Solar panels can be expensive to install. ”可知，C项不正确。故选C。

单选题 The word incorporate in Paragraph 5 is closest in meaning to ______.

【正确答案】 D

【答案解析】[解析] 根据文章倒数第二段第二句话...Teachers at schools that use solar power often incorporate it into science lessons. ”可知，学校的老师们会将太阳能的使用问题纳入到他们的科学课程当中，incorporate意为“包含，吸收，合并”。reach意为“达到”；improve意为“改善，提高”；turn意为“改变，转向”；include意为“包含，包括”。故选D。