Questions 46 - 55. Read the following passage and circle the letter A, B, C, or D to indicate the best answer
to each of the following questions.
Our eyes and ears might be called transformers because they sense the light and sound around us and turn
them into electrical impulses that the brain can interpret. These electrical impulses that have been transformed
by the eyes and ears reach the brain and are turned into messages that we can interpret. For the eye, the process
begins as the eye admits light waves, bends them at the cornea and lens and then focuses them on the retina. At
the back of each eye, nerve fibers bundle together to form optic nerves, which join and then split into two optic
tracts. Some of the fibers cross so that part of the input from the right visual field goes into the left side of the
brain, and vice versa. The process in the ear is carried out through sensory cells that are carried in fluid-filled
canals and that are extremely sensitive to vibration. Sound that is transformed into electricity travels along
nerve fibers in the auditory nerve. These fibers form a synapse with neurons that carry the messages to the
auditory cortex on each side of the brain.
46. According to the author, we might call gur eyes and ears "transformers" because …
A. They sense light and sound. B. They create electrical impulses.
C. The brain can interpret the input. D. The messages travel in the brain.
47. Which of the following is closest in meaning to the word "admits" in line 4?
A. Selects B. Interprets C. Let-in D. Focuses on
48. In line 7, what does the word "them" refer to?
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A. Messages B. Processes C. Eyes D. Light waves
49. The word "bundle" in line 7 could best be replaced by which of the following?
A. Group B. Grow C. Branch D. Settle
50. The word "split" as used in line 7 is closest in meaning to which of the following?
A. Tear B. Fracture C. Separate D. Crack
51. Which part of the passage best describes the first step in transforming light into electrical impulses?
A. Lines 3-6 B. Lines 6-8 C. Lines 1-2 D. Lines 7-9
52. According to the passage, when input from the right visual field goes into the left side of the brain, what
happens?
A. The nerve fibers bundle together. B. The optic nerves split.
C. The retina receives light waves. D. Input from the left field goes to the right side.
53. The phrase "carried out" in line 11 could best be replaced by which of the following?
A. Brought over B. Taken away C. Accomplished D. Maintained
54. Which of the following is most similar to the word "vibration" as used in line 13?
A. Sound B. Movement C. Light D. Heat
55. According to the passage, optic nerves eventually …..
A. Split B. Bend C. Admit light waves D. Become messages
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