SECTION III

Time-35 minutes

25 Questions

Directions: The questions in this section are based on the reasoning contained in brief statements or passages. For some questions, More than one of the choices could conceivably answer the question. However, You are to choose the best answer; that is the response that most accurately and completely answers the questions. You should not make assumptions that are by commonsense standards implausible, superfluous. or incompatible with the passage. After you have chosen the best answer; blacken the corresponding space on your answer sheet.

1. It is difficult to keep deep wounds free of bacteria. Even strong antibiotics fail to kill the bacteria that live in such wounds. However , many physicians have succeeded in eliminating bacteria from deep wounds by packing the wound with a sweet substance like sugar.

Which one of the following , if true, most helps to explain why treating deep wounds with sugar as described above is successful?

(A) Bacteria that live in deep wounds thrive in a moist environment, and sugar has a dehydrating effect.

(B) Sugar that is nearly pure is readily available for use in medical treatments.

(C) Many kinds of bacteria can use sugar as a nutrient and will reproduce rapidly when sugar is available to them.

(D) Some foods that contain sugar can weaken the effects of certain antibiotics

(E) Strong antibiotics were developed only recently, but the use of sugar as a treatment for wounds dates back to ancient times .

2. People who are red/green color-blind cannot distinguish between green and brown, Gerald cannot distinguish between green and brown. Therefore Gerald is red/green color-blind.

Which one of the following most closely parallels the reasoning in the argument presented in the passage?

(A) People who are fair-skinned suffer from sunburn. William is fair-skinned. Therefore William suffers from sunburn.

(B) People who are suffering from sinusitis lose their sense of smell. Mary has lost her sense of smell. Therefore Mary is suffering from sinusitis.

(C) People who have suffered from jaundice cannot become blood donors, Jean is a blood donor. Therefore Jean has not suffered from jaundice.

(D) People who are color-blind cannot become airline pilots. Arthur is color-blind. Therefore Arthur cannot become an airline pilot.

(E) People who are diabetic cannot eat large amounts of sugar. Freda is diabetic, Therefore Freda is on a special diet.

3. Early in this century, Alfred Wegener developed the concept of continental drift . His ideas were rejected vehemently because he postulated no identifiable force strong enough to make the continents move. We have come to accept Wegener's theory, not because we have pinpointed such a force, but because new instruments have finally allowed continental movement to be confirmed by observation.

The passage best illustrates which one of the following statements about science?

(A) The aim of science is to define the manifold of nature within the terms of a single harmonious theory.

(B) In a accepting a mathematical description of nature, science has become far more accurate at identifying underlying forces.

(C) The paradox of science is that every improvement in its measuring instruments seems to make adequate theories harder to work out.

(D) Science employing statistics and the laws of probability, is concerned not with the single event but with mass behavior.

(E) When the events a theory postulates are detected, the theory is accepted even without an explanation of how those events are brought about.

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