It would be wonderful to observe a singularity and obtain direct evidence of the undoubtedly bizarre phenomena that occur near one. Unfortunately in most cases a distant observer cannot see the singu- larity; outgoing light rays are dragged back by gravity so forcefully that even if they could start out within a few kilometers of the singularity, they would end up in the singularity itself.
25. The author's primary purpose in the passage is to
(A) describe the formation and nature of singularities
(B) explain why large numbers of stars become singularities
(C) compare the characteristics of singularities with those of stars
(C) explain what happens during the stages of a singularity's formation
(D) imply that singularities could be more easily studied if observers could get closer to them
26. The passage suggests which of the following about the Sun?
I. The Sun could evolve to a stage of col- lapse that is less dense than a singularity.
II. In the Sun, the inward force of gravity is balanced by the generation of heat.
III. The Sun emits more observable light than does a white dwarf or a neutron star.
(A) I only (B) III only (C) I and II only
(D) II and III only (E) I, II, and III
27. Which of the following sentences would most probably follow the last sentence of the passage?
(A) Thus, a physicist interested in studying phenomena near singularities would necessarily hope to find a singularity with a measurable gravitational field.
(B) Accordingly, physicists to date have been unable to observe directly any singularity.
(C) It is specifically this startling phenomenon that has allowed us to codify the scant information currently available about singularities.
(D) Moreover, the existence of this extra- ordinary phenomenon is implied in the extensive reports of several physicists.
(E) Although unanticipated, phenomena such as these are consistent with the structure of a singularity.
28. STABILIZE:
(A) penetrate (B) minimize (C) fluctuate
(D) analyze (E) isolate
29. RENOVATE:
(A) design to specifications
(B) keep hidden (C) cause to decay
(D) duplicate (E) complicate
30. PROFUSE:
(A) sequential (B) shoddy (C) scant
(D) surly (E) supreme
31. ANCHOR:
(A) unwind (B) unbend (C) disjoin
(D) disrupt (E) dislodge
32. REFUTE:
(A) reveal (B) associate
(C) recognize (D) understand (E) prove
33. NADIR:
(A) immobile object
(B) uniform measurement
(C) extreme distance (D) topmost point
(E) regular phenomenon
34. APPROBATION:
(A) disinclination (B) stagnation
(C) condemnation (D) false allegation
(E) immediate repulsion
35. FATUOUSNESS:
(A) sensibleness (B) courage
(C) obedience (D) aloofness
(E) forcefulness
36. TIMOROUS:
(A) consummate (B) faithful
(C) intrepid (D) antagonistic
(E) impulsive
37. SEMINAL:
(A) withholding peripheral information
(B) promoting spirited exchange
(C) suggesting contradictory hypotheses
(D) displaying cultural biases
(E) hampering further development
38. DISINGENUOUSNESS:
(A) coherent thought (B) polite conversation
(C) acquisitiveness (D) guilelessness
(E) contentiousness
No4-1 SECTION 6
Questions 1-4
Six products-U, V, W, X, Y, and Z-are to be placed in the display window of a vending machine with six compartments, numbered 1 through 6 from left to right. The products must be placed in the win- dow, one product in each compartment, according to the following conditions:
U cannot be immediately to the left or immedi- ately to the right of V.
W must be immediately to the left of X.
Z cannot be in compartment 6.
1. Which of the following products CANNOT be placed in compartment 1?
(A) U (B) V (C) W (D) X (E) Z
2. If X is placed in compartment 3, W must be placed in compartment
(A) 1 (B) 2 (C) 4 (D) 5 (E) 6
3. If U is placed in compartment 5, whi
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