Can you walk a straight line? The question is much more difficult to answer

游客2023-09-03 42

问题    Can you walk a straight line? The question is much more difficult to answer than you think. A recent experiment held in Japan shows that it is almost (47)______ for people to walk exactly straight for 60 meters. Each man had to wear socks soaked with red ink and walk on white paper fixed (48)______ to the floor. The (49)______ showed that all walked in a winding rather than a straight line. Researchers found that people (50)______ their direction of walking regularly. However, the range differed from subject to subject.
This suggests that none of us can walk in a (51)______ straight line. Rather, we meander(漫步), mainly due to a slight structural or functional (52)______ of our legs. So steps by the left and right legs of a person are (53)______.
As a result, although we may start walking in a straight line, several steps afterwards we have changed direction. However, (54)______ helps us to correct the direction of walking and leads us to the target.
Your ears also help you walk. After turning around a lot with your eyes closed, you can hardly stand still, (55)______ to say, walk straight. It’s all because your ears are still spinning and can’t help you keep your balance. Your inner ear is a structure containing liquids. When you spin, the liquid inside follows your spinning, but when stop, the liquid continues to spin for a while, the result of which is (56)______. For the moment, although your eyesight tells you to walk in a straight line your brain listens to your spinning ears, thus you don’t walk as what your eyes tell.

            Word Bank:
A.imbalance                I. probable
B.eyesight                J. folded
C.similar                K. sleepy
D.impossible             L. needless
E. strictly                M. footprints
F. dizziness             N. different
G. flat                   O. slightly
H. readjusted [br]

选项

答案 M

解析此处要求填写一个作主语的名词，选项中有imbalance，eyesight，dizziness和footprints。根据上文提到“实验中的人穿着泡过红墨水的袜子在白纸上走”可推知，应该是根据人们的“脚印”(footprints)来判断走的是否是直线。

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