Passage Going Solar in China
Going Solar in China
In the Anhui province of China, 166,000 floating solar panels are strung together atop the rippling surface of a lake. It is the largest solar-power farm in the world, an immense blanket of renewable energy strong enough to power 15,000 homes.
The floating solar-power farm, which harvests the sun’s rays for power, was first conceived by the Sungrow Power Supply Company after heavy rains flooded a collapsed coal mine and created a lake. Sang Dajie, a former coal miner from the area, is now an electrician for the farm, which occupies the original mine site where he used to work. Now, instead of working under the dangerous conditions at the mine, he spends his days maintaining the solar panels on the water. “The coal mine,” says Dajie, “was very hot and the air was bad. . . . But here I feel safe. The new energy is safe.” People in China rely primarily on the burning of coal in massive power plants to create electricity. While the burning of fossil fuels, like coal, is a reliable source of energy, the process releases massive amounts of carbon dioxide into the atmosphere, creating air pollution and harming Earth. Solar power, on the other hand, is clean and safe for the environment.
Solar panels are typically placed on rooftops or in open fields, but experts in China determined that the newly formed lake was a great spot for the solar-power farm. Solar-power farms over water are efficient because the water keeps the panels cool. A water-based solar-power farm can potentially generate more power than one based on land. Additionally, with the solar-power farm on the lake, the land in the surrounding area remains available for farming, which is another source of income for Anhui residents.
Originally, China displayed minimal interest in solar energy. The use of solar energy was limited primarily to rural areas that had no access to a power grid. Without access to other means of electricity, people in these areas used solar panels as an alternative to lighting candles and kerosene lamps. China began to manufacture solar panels for other countries in the late 1990s when the German government offered its people financial incentives for installing solar panels. The heightened demand for solar panels was instantaneous, and Chinese businesses were quick to seize the opportunity. Soon the governments of Spain and Italy also offered incentives for using solar technology, and Chinese manufacturers were ready for the increased demand.
Between 2008 and 2013, China improved its manufacturing technology and processes so much that it effectively lowered the worldwide cost of using solar energy by 80 percent, further increasing demand. However, a point came when Chinese manufacturers had become so efficient at producing solar-power equipment that they outpaced the demand. The manufacturers were producing two solar panels for every one solar panel they sold. In order to make manufacturing a profitable industry again, the Chinese government offered its own financial incentives to Chinese citizens for using solar energy. Now, projects like the floating solar-power farm are putting those surplus panels to use, in addition to providing jobs and cleaner energy.
A second solar-power farm has already been constructed near the massive one in Anhui as part of a government initiative to build more low-emission power plants. The goal is to meet 20 percent of the country’s energy needs with renewable, clean energy sources by the year 2030.
As Sang Dajie puts it, “I’m glad we are reusing this area to create a better future.” China’s dedication to increasing its production of renewable energy through solar power demonstrates that patience, time, and flexibility can result in transformation.
Question
How does paragraph 2 contribute to the development of ideas in the article?
- AIt explains the series of events that led a former coal miner to become an electrician at a solar-power farm.
- BIt provides details on how a shift from coal mining to collecting solar power can improve conditions for energy workers and the environment.
- CIt describes the reasons a company chose to transform a lake created by a collapsed coal mine into a solar-power farm that floats on the water.
- DIt presents an overview of how a collapsed coal mine became a productive floating solar-power farm over several years.
Show the answer
Correct answer: B
The question asks how paragraph 2 contributes to the development of ideas in the article.
A. Incorrect. The details in paragraph 2 explain how the coal mine was flooded and later turned into a solar farm. Dajie’s experience is used to highlight the differences between the two forms of energy, but the transition from coal to solar and the differences between the two, rather than Dajie, are the focus of the paragraph.
B. CORRECT. Dajie’s comparison of the coal mine and the solar farm is used to highlight the improved working conditions for energy workers, and the last two sentences of the paragraph describe the air pollution created by coal power and explain the environmental benefits of solar power. Therefore, this paragraph shows how transitioning from coal to solar power benefits both workers and the environment.
C. Incorrect. The first sentence of the paragraph explains how the lake was formed, but the reasons the location was chosen by the energy company are not a central idea of the article or the paragraph. The paragraph focuses on the advantages of solar power compared with coal power.
D. Incorrect. Although the author does explain how the area was affected by a flood at a coal mine that created a lake, the process of the lake becoming a solar farm is not a central idea of the paragraph. Instead, the paragraph focuses on the differences between the mine and the solar-power farm.
Question analysis
This question asks how paragraph 2 of “Going Solar in China” contributes to the development of ideas in the article. The long paragraph moves from a flooded coal mine and the company that planned the solar-power farm to a former miner’s comments and facts about coal, so students must decide what the paragraph as a whole adds rather than fasten on one detail.
- Grade level
- Grade 7 reading and task
- Compared with grade 7
- At grade 7 Explaining how a paragraph contributes to an article is standard grade 7 structure work. Paragraph 2 is long and changes topic several times, so students must summarize all of it, a typical step for grade 7 readers.
- Estimated difficulty
- Moderate: several steps, or a close reading with one strong distractor.
- Thinking it demands
- Depth of knowledge 2, skills and concepts · mainly analyze
- What makes it hard
- A lot to read moderate
- How, not what minor
- Every choice must be checked minor
- Evidence
- Answered from one paragraph or stanza
- Reading level
- Passage: about grade 13, 598 words; question and choices: about grade 11, 100 words.
- Students, last 30 days
- Not enough answers yet to show (it takes 10).
Why it is hard, traps and wrong answers (shows the answer)
Why it is hard
The paragraph opens with how the farm came to be, which invites a choice about its origin, but most of it compares two workplaces and two fuels. Students who stop after the first sentences or fasten on Dajie’s career miss the closing sentences on carbon dioxide and clean solar power, which carry half of the right answer. Summing up every part before reading the choices keeps the vivid miner from crowding out the environmental point.
A lot to read moderate Understanding the question
Paragraph 2 is the article’s longest, nine sentences that move from the flooded mine and Sungrow’s plan to Dajie and his quotation and then to coal’s carbon dioxide and solar power’s clean energy. (Kintsch, 1998; Gorin & Embretson, 2006; Freedle & Kostin, 1993)
How, not what minor Working it out
The stem asks what the paragraph contributes to the article, so students must name what its parts do together, compare coal with solar for workers and for the air, rather than list its events. (Anderson & Krathwohl, 2001)
Every choice must be checked minor Choosing the answer
Three choices rest on things the paragraph really contains, the flood that made the lake, Dajie’s change of job, the farm on the mine site, so each must be tested against the whole paragraph. (Embretson & Wetzel, 1987)
Strategy: Split paragraph 2 into its parts and say in a few words what each part shows, then choose the description that every part of the paragraph supports.
Traps
- Too narrow: A single detail offered as the central idea or a summary, or a summary that keeps minor details and leaves out an essential part.
- Wrong part of the text: A choice is true of another paragraph, stanza or speaker than the one asked about.
- Twists what the text says: Uses the text's topic and ideas but changes what it says: who did it, how much, when, or why.
The wrong answers, classified
A Too narrow (King et al., 2004)
Follows Dajie from coal miner to electrician and takes his career as the paragraph’s point, though it uses his words to compare the mine with the farm, not to tell his story.
C Wrong part of the text (Kirsch & Mosenthal, 1990)
Looks for why the lake was chosen, but those reasons, cooler panels and land left free for farming, come in paragraph 3, while paragraph 2 only says how the lake formed.
D Twists what the text says (King et al., 2004)
Builds on the first sentence’s flooded mine and adds a change “over several years,” though the paragraph gives no timeline and spends most of its length on safety and pollution.
Working it out, step by step
Figure out what is asked
This asks what paragraph 2 adds to the article as a whole. It is the longest paragraph, and it has several parts. To answer, find what all the parts do together. Don’t stop at the first sentence.
Split paragraph 2 into parts
- How the farm began: heavy rains flooded a collapsed coal mine and made a lake.
- Dajie, who once mined coal on that spot, now maintains the panels. He compares the two jobs.
- Coal: burning it “releases massive amounts of carbon dioxide into the atmosphere, creating air pollution and harming Earth.”
- Solar: “Solar power, on the other hand, is clean and safe for the environment.”
See what the parts do together
Only the first sentence tells how the farm began. Everything after it compares coal with solar power. Dajie’s part shows the change is better for workers. The last sentences show it is better for the environment, the air, land and water around us. Carbon dioxide is a gas that harms the planet in large amounts.
Test the four choices
- A does not fit. Dajie’s job change is only one part, and the paragraph never explains the steps that led to it.
- B fits. It covers both the workers and the environment.
- C does not fit. Paragraph 2 says only how the lake formed. Why experts chose the lake, such as water keeping panels cool, comes in paragraph 3.
- D does not fit. The paragraph gives no timeline, and only its opening is about how the farm began.
Choose the answer
Watch out: A is tempting because Dajie is the most vivid part of the paragraph. But his story is there to compare coal with solar, not to tell about his career. So the answer is B.
Why this answer and not the closest wrong one
Of the wrong choices, A pulls hardest. It is true that Dajie moved from coal miner to electrician. But the paragraph uses his words for a comparison, then adds facts about coal’s pollution and solar power’s clean energy. B is the only choice that includes both halves: safer work and a cleaner environment.
More questions like this
The original DOE question

The passage “Going Solar in China” as printed (page 174)
