题目内容
（请给出正确答案）
[主观题]
The perpetual spinning of particles is much like that of a top, with one significant diffe
rence: unlike the top, the particles have no need to be wound up, for ______ is one of their ______ properties.
A．revolution...radical
B．motion...intangible
C．rotation...intrinsic
D．acceleration...lesser
E．collision...hypothetical
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