it ＿to all that light travels faster than sound A
it ＿to all that light travels faster than sound A
it ＿to all that light travels faster than sound
A.is known B.is know C.know D.is said
it ＿to all that light travels faster than sound
A.is known B.is know C.know D.is said
英語人氣：327 ℃時間：2020-06-01 05:05:49
優(yōu)質(zhì)解答
選C,強調(diào)客觀的事實：光速比聲速快是眾所周知的
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