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  3. Are you aware that you actually possess six senses? The sixth sense is a muscular sense responsible for directing your muscles i

Are you aware that you actually possess six senses? The sixth sense is a muscular sense responsible for directing your muscles i

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问题     Are you aware that you actually possess six senses? The sixth sense 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 is your muscular sense in action.
    Muscles are stringy bundles of fibers varying from one five-thousandth of an inch to about three inches. They have three unique characteristics: they can become shorter and thicker and 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 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.
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C
解析 推理题。该试题要求找出文中暗含但未直接陈述的内容，这道题难度稍微有些大。文章最后一段中有“The voluntary muscles...number more than five hundred”，该段段首同时提到而大多数为“involuntary muscles”，所以可推断出答案为C项。
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