Explanation for Question 41 From the Writing Section on the 2017 May Sat
Question 41 asks which choice best introduces the information that follows to 2 figure that out. We have to read the paragraph without 3 reading the underlying section, to understand what it's introducing and then choose the best 4 choice. So the paragraph goes, 5 there is a, there's also a practical reason for studying folk rides blank 6 above ground power lines are often struck by lightning causing power dam, 7 power outages, but the effects of lightening on buried power lines were not investigated 8 until 1990s research at the university of Florida has shown that lightning can 9 also disable underground power systems because the strikes keep 10 moving below ground examination of full rides around birdied power systems, 11 help scientists understand the most effective. 12 She only materials for power lines, Florida averages about 25 to 40 13 lightning strikes per square mile each year. 14 So the scientists help their work can help mitigate the damage caused by so 15 many strikes. 16 So what clearly talking about lightning strikes, 17 how those, um, are affected and the Burton, 18 particularly the bird power lines. Let's read the answer choices to figure out which 19 one talks about that. And such as a says, 20 when we chose to just dig up them up very carefully, 21 full grids can remain intact after they are extracted from the ground. 22 So I think they're talking a little bit more about, 23 um, lightening then with this answer, 24 choice talks or discusses B says lightenin...