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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
admin
2010-04-12
72
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.
According to this passage, more than haft of a person’s body is composed of ______.
选项
A、involuntary muscles
B、muscle fibers
C、voluntary muscles
D、sensory nerves
答案
A
解析
细节题。文章第三段首句有直接的相关描述:“More than half of person’s body is composed of muscle fibers,most of which involuntary”,即人体的大部分由肌肉纤维构成,而肌肉纤维大多是不受意识控制的。
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0
大学英语四级
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