---Do you know sound travels very fast?
----Yes. But light travels _______ sound.
| A．as fast as | B．more faster than |
| C．much faster than | D．slower than |
---Do you know sound travels very fast?
----Yes. But light travels _______ sound.
| A．as fast as | B．more faster than |
| C．much faster than | D．slower than |
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