Explanation for Question 21 From the Reading Section on the 2017 May Sat
Question 21 asks about the main purpose of the passage. 2 So what is the main purpose of the passage here? 3 So we can look at a few things to determine this answer. 4 We can look first at the title of the passage that might give us 5 some insight. We can also look at the introductory paragraph and maybe see 6 if what's an introductory paragraph flows into what's in the body 7 of the passage. So the first thing we're going to look at here is 8 the title. It says, star crossing, planets, 9 literally strut their stuff, and it was published in the American association for the 10 advancement of science. So if we're talking about the advancement of science here, 11 this is probably like new ideas in this journal, 12 and it's going to be about star crossing planet. 13 It has kind of a catchy name. So I assume it's going to be 14 kind of outlining something or describing something, 15 but let's look at the introductory paragraph so we can see the last sentence 16 there says the results announced at a meeting of the American astronomical society. 17 Also show the power of an up-and-coming method of calculating the masses of alien 18 worlds from the way they eclipse their stars. So you can see here that 19 it very quickly introduces the discussion of an up and coming method of calculating 20 the masses of alien worlds. So that kind of cutting edge 21 technology or science that we were talking about with the title and the journal 22 is published in. And then we can look into the second...