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 hand at the correct spot. This automatic perception of the position of 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; they can stretch; and they can retract to their original positions. 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 are involuntary—in other words, work without conscious direction. The voluntary muscles, those that we move consciously to perform particular actions, 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.
1.Intelligent use of the muscles means that（ ）.
2.According to the selection, more than half of a person’s body is composed of（ ）.
3.An average woman is weaker than an average man because she has（ ）.
4.It is implied but not stated that（ ）.
5.According to the selection, the muscular sense is responsible for（ ）.
问题1选项
A.one always knows what his muscles are doing
B.one performs simple actions without working
C.one’s muscles are used only to the extent necessary for each action they perform
D.one improves muscular action consciously
问题2选项
A.voluntary muscles
B.muscle fibers
C.involuntary fibers
D.sensory nerves
问题3选项
A.more voluntary muscles than an average man
B.only 60 to 70 percent as much muscle for her body mass
C.60 to 70 percent less muscle for her body mass
D.less muscle fiber for her body weight
问题4选项
A.the muscular sense is more important than any other senses
B.muscular sense involves automatic perception
C.there are many more than 500 involuntary muscles in the body
D.muscle tissue is inflexible
问题5选项
A.the efficiency of our muscles
B.the normal breathing function
C.directing our muscles intelligently
D.the work of only our involuntary muscles
第1题:C
第2题:B
第3题:B
第4题:B
第5题:C
第1题:
细节事实题。根据文章第一段第二句The sixth sense is a muscular sense responsible for directing your muscles intelligently to the exact extent necessary for each action you perform.可知，第六感是一种肌肉感觉，可智能地精准控制人体活动。因此，C选项是正确答案。
第2题:
细节事实题。题意：根据原文，人类身体超过一半的组织是由什么构成的？根据原文第三段第一句：More than half of a person’s body is composed of muscle fibers.可知，人体超过一半的组织是由muscle fibers（肌肉纤维）构成。因此，正确答案为B选项。
第3题:
细节事实题。根据原文第三段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.可知，女性比正常男性力气小是因为女性身体内肌肉含量仅为男性的60-70%。因此，B选项为正确答案。
第4题:
推理判断题。本文并未说明也未暗示肌肉感觉比其他感官重要，因此A选项错误。根据原文最后一段The voluntary muscles, those that we move consciously to perform particular action, number more than five hundred.可知，C选项与原文意思相反，故C选项错误。D选项说肌肉组织是不可弯曲的，与原文不符，故排除。因此，B选项是正确答案。
第5题:
细节事实题。由文章第一段The sixth sense is a muscular sense responsible for directing your muscles intelligently.可知，肌肉感官的作用是directing your muscles intelligently，因此，本题正确答案为C选项。
