One of the properties of light is( )trav

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问题 One of the properties of light is( )traveling in wave form as it goes from one place to another.A.itB.it’sC.itsD.their

选项 A.it
B.it’s
C.its
D.their

答案 C

解析 该题考查非谓语动词。句中traveling为动名词做表语,空格处所填内容做动名词的逻辑主语,首先排除B,D选项,能做动名词逻辑主语的词有形容词性物主代词,名词所有格或人称代词宾格,故答案为C。
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