TOEFL IBT Reading Practice Test 74 from The Collection of TOEFL Reading Comprehension
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Reading Directions: This section measures your ability to understand academic passages in English.
The Reading section is divided into separately timed parts.
Most questions are worth 1 point, but the last question for each passage is worth more than 1 point. The directions for the last question indicate how many points you may receive. You will now begin the Reading section. There are three passages in the section. You should allow 20 minutes to read each passage and answer the questions about it. You should allow 60 minutes to complete the entire section.
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In general, as soon as the newborn child’s muscles, sense organs, and nerves are fully formed, the child begins to use them. But much of the human nervous system is not fully developed until the child is a year or two old, and some parts, such as the corpus callosum, continue to mature for at least the next 20 years.
The general pattern of bodily development is from head to foot. Simple skills, such as head movements, appear first because the structures that control these skills are among the first to mature. More complex behavior patterns, such as crawling, standing, and walking, come much later in the developmental sequence than head movements do.
The motor centers in the brain are connected by long nerve fibers(usually through one or more synapses) to the muscles in various parts of the body. Since the head muscles are closer to the brain than are the foot muscles, according to one theory, the head comes under the control of the motor centers long before the feet do. The appearance of a new motor skill (such as crawling and grasping) always suggests that a new part of the child’s body has just matured-that is, that the brain centers have just begun to control the muscles involved in the new motor skill.
1. What is the author’s main purpose in this passage?
(A) To describe how children crawl, stand, and walk
(B) To explain why some children are slow to develop
(C) To describe early physical development in children
(D) To explain the function of the corpus callosum
2. According to the passage, the corpus callosum is part of the human
(A) muscular system
(B) digestive system
(C) circulatory system
(D) nervous system
3. According to the passage, which of the following motor skills does an infant first develop?
(A) Moving the head
(C) Controlling the arms
4. According to the passage, we can tell that the child’s brain centers have begun to control new muscles when
(A) the child’s brain matures
(B) the child moves its body in new ways
(C) long nerve fibers disappear
(D) the child performs an acquired skill more rapidly