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TOEFL

TOEFL - Reading Comprehension - Test 19

in Part 4 - Reading Comprehension

In this section you will find a number of tests based on the fifth part of the Test Of English for International Communication.
For each question you will see an incomplete sentence. Four words or phrases, marked A-D are given beneath each sentence. You are to choose the one word or phrase that best completes the sentence.

Click on the 'View Answers' tab to see the correct answers.

Read the passage and choose the option that best answer each question. 
Our eyes and ears might be called transformers since 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 eye and ear reach the brain and are turned 5 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 10 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. 15 These fibers form a synopsis with neurons that carry the messages to the auditory cortex on each side of the brain.