지문1:
A critical consensus has emerged that Mary McCarthy will be remembered primarily as an essayist rather than as a novelist. But despite her formidable gifts as a polemical and discursive writer, and for all her reputation as an intellectual who sacrificed feeling to intelligence, what powers McCarthy's best essays are her fictional rather than strictly intellectual gifts. She makes her points by telling stories or by way of vivid description, arresting images and subtle characterization (....)
문제: In the context in which it appears, "discursive" most nearly means
정답은 Analytical 이라는데 제가 고른 오답은 Rambling(되는 대로 퍼져나가는), Circuitous(빙돌아가는) 이에요. 사전적 의미로 discursive는 두서 없는, 산만한 이란 뜻인데 여기서 discursive는 사전적 의미랑 아예 반대되는 단어를 선택한 이유가 뭘까요? ㅠㅠ
지문2:
X-ray examination of a recently discovered painting-judged by some authorities to be a self-portrait by Van Gogh-revealed an underimage of a woman's face. Either van Gogh or another painted covered the first painting with the portrait now seen on the surface of the canvas. Because the face of the woman in the underimage also appears on canvases van Gogh is known to have painted, the surface painting must be an authentic self-portrait by van Gogh.
문제: The conclusion is properly drawn if which is assumed?
답: Any painted canvas incorrectly attributed to van Gogh would not contain an underimage of a subject that appears in authentic paintings by that artist.
제 오답: Many painted canvases that can be reliably attributed to van Gogh contain underimages of subjects that appear on that least one other canvas that van Gogh is known to have painted.
위 답이 정답인것도 맞는데 제가 선택한 오답도 맞는거 같아서..반고흐 사진으로 추정된 많은 캔버스들이 다른 반고흐 사진에도 같은 underimage를 지니고 있다..이건 지문과 무관(not related)해서 오답인건가요?
지문 3.
Caterpillars of all species produce an identical hormone called "juvenile hormone" that maintains feeding behavior. Only when a caterpillar has grown to the right size for pupation to take place does a special enzyme halt the production of juvenile hormone. This enzyme can be synthesized and will, on being ingested by immature caterpillars, kill them by stopping them from feeding.
문제: Which of the following, if true, most strongly supports the view that it would not be advisable to try to eradicate agricultural pests that go through a caterpillar stage by spraying croplands with the enzyme mentioned above?
제 오답 A.Most species of caterpillar are subject to some natural predation.
정답 C. Many agriculturally beneficial insects go through a caterpillar stage.
문제는 enzyme을 쓰면 안되는 점을 지지하는 답을 찾으라는 걸로 해석되는데요, 정답이 C인건 알겠는데 또 A가 안되는 이유를 정확하게 못 찾겠습니다. Caterpillar종들은 predation으로 위협당할 확률이 높다는건 지문과 무관해서인거죠?