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  3. Are you aware that you actually possess six senses? The sixth is a muscular

Are you aware that you actually possess six senses? The sixth is a muscular

游客2025-04-27  31
问题     Are you aware that you actually possess six senses? The sixth is a muscular sense responsible for directing your muscles intelligently—to the exact extent necessary for each action you perform. For example,when you reach for an object,the sensory nerves linking the muscles to the brain stop your muscles in relation to the object in your muscular sense in action.
    Muscles are stringy bundles of fibers varying from one five-thousandth of all inch to about three inches. They have three unique characteristics:they can become shorter and thicker;they can stretch to their original position. Under a high-powered microscope,muscle tissue is seen as long,slender cells with a grainy texture like wood.
    More than half of a person’s body is composed of muscle fibers,most of which involuntary—in other words,work without conscious direction. The voluntary muscles,those that we move consciously to perform particular action,number more than five hundred. Women have only 60 to 70 percent as much muscle as men for their body mass. That is why an average woman can’t lift as much,throw as far,or hit as hard as an average man. [br] It is implied but not stated that_____.
选项 A、the muscular sense is more important than any other sense
B、muscular sense involves automatic perception
C、there are many more than 500 involuntary muscles in the body
D、muscle tissue is inflexible
答案 B
解析 题目文章提到的肌肉意识进行考查。最后一段“muscle fibers，most of which involuntary--in otherwords，work without conscious direction，”通过此句话可知，肌肉纤维的运动是无意识的。据此判断，应选择B。
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