CR Question...

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1

<p>In the 2006 PSAT Saturday Form, I scored a 77 in CR, but I got three questions wrong.</p>

<p>One of the questions I got wrong was...</p>

<p>Section 3, #45:</p>

<p>"The author uses the phrase "yet peaceful" (line 25) in order to set up a contrast between the</p>

<p>(A) views regarding astronomical research in Newton's time and the views regarding that subject in our time</p>

<p>(B) quality of the images obtained by the Hubble telescope and the quality of images obtained by the traditional telescopes</p>

<p><a href="C">b</a>** effects of interstellar space and the effects of Earth's lower atmosphere on starlight</p>

<p>(D) reaction of astronomers to clear images and the reaction of astronomers to blurred and smeared images</p>

<p>(E) romantic reaction to stars and scientific theories about them"</p>

<p>Blurb:</p>

<p>After a swift yet peaceful journey, the sharp pinpoint of light from a distant star reaches Earth's lower atmosphere, where it gets juggled and wiggled and smeared into an oversized blob on the detector attached to a telescope.</p>

<p>Other than that, I'm super happy I got 45/48 right! :)</p>

2

<p>C is the answer, right?</p>

3

<p>Yes. And also does anyone know how to calculate the average mph of a journey if the first hour was 40 mph and the last two were 60mph?</p>

4

<p>40+60+60/3=160/3=53.33</p>

<p>I have no idea how to do this CR question though.</p>

<p>As a start, the answer isn’t A, B, or E.</p>

5

<p>Just got a 73 on the Math section… ugh at getting 2 questions wrong.</p>

<p>^Thanks for the math response.</p>

<p>Also, how do you do this:</p>

<p>"If (x+y)(x^2-y^2)=0, which of the following must be true?</p>

<p>(A) x = y
(B) x = -y
(C) x^2 = y^2
(D) x^2 = -y^2
(E) x^3 = y^3"</p>

<p>Answer is C.</p>

6

<p>It’s just rate=distance/time. One hour at a rate of 40 mph and 2 hours at 60 mph.</p>

<p>1(40)+2(60)</p>

<p>40+120=160 (distance)</p>

<p>160/3(time)= 53 1/3(rate)</p>

<p>Edit: GreedIsGood beat me to it</p>

7

<p>^Eh, it’s okay. You’re all Glenn Cocos in my book.</p>

8

<p>What you see via telescope is a giant blob. It is alarming and readily present. Stars have no effect on us in reality (i.e., when we’re not looking through telescopes); they are peaceful and quiet. The contrast between “swift” and “peaceful” describes this well.</p>

<p>This is just my assumption. Based on the other answer choices there seems to be a lot of context behind the question, so I don’t know if my explanation was even pertinent.</p>

9

<p>I’m about to start the writing section. As of now I have a 77 CR and a 73 Math. I need a 72+ to “qualify” for National Merit in 2006.</p>

10

<p>

</p>

<p>Because (x+y)(x^2-y^2)=0, the absolute values of x & y must be equal. </p>

<p>For example, x could = 5, but y could be -5 and still solve the quation. But by squaring the variables, all the exceptions are taken into account.</p>

11

<p>Thanks. That makes a lot of sense.</p>

<p>I finished Writing in 13 minutes… let’s see how I do… :S</p>

<p>37 right, 2 wrong.</p>

<p>Score… 74. Meh. </p>

<p>Composite: 224</p>

12

<p>Anyone know the reasons behind these:</p>

<p>“The FDA has overlooked the dangers of some drugs that seemed perfectly safe until long after they are in general use. No error.”</p>

<p>Until was the error.</p>

<p>and…</p>

<p>"People are no more likely to become athletic by watching sporting events as they are to become healthy by reading medical books. No error</p>

<p>Error was AS. It should be THAN right?</p>

13

<p>Idk about the first one, but yes, the second should be “than”</p>

14

<p>I <em>think</em> until in the first sentence should be replaced with even.</p>

15

<p>There must’ve been a typo for the first one. The answer is D. “Are” should be “were.” The drugs seemed perfectly safe, which implies that they are now considered dangerous. This means that they are obviously not still in general use now; they were in general use. </p>

<p>These drugs seemed perfectly fine until long after they were in general use. The FDA has overlooked them (it is present tense–“has overlooked” instead of “had overlooked”–because the FDA’s mistakes still have an effect in the present).</p>

16

<p>Hmm, after re-reading the first sentence, I have to agree with crazybandit; the releasing of the drugs happens before the overlooking so “are” should be “were.” I should have re-read the sentence first.</p>

17

<p>Lol I must’ve read it over too quick. It was D. So I got a 77 instead of a 73…</p>