[音频]Tai chi, a kind of martial art, is usually practiced by in parks.
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Tai chi is not onlya traditional activitybut also a display of.
Tai chi is a combination of slow movements,and meditation.
Taichi is a great way to and can be practiced by young people.
空间形体的正投影可以反映其真实形状和大小
A. 对
B. 错
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