A-A+
According to this passage more than haft of a
问题详情
According to this passage, more than haft of a person"s body is composed of ______.
A．involuntary muscles
B．muscle fibers
C．voluntary muscles
D．sensory nerves
参考答案
正确答案：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。
