—Do you know sound travels very fast?
　一Yes. But light travels _________ sound.
A． much faster thanB．a(chǎn) little faster than
C．a(chǎn)s fast asD．slower than
A

試題分析：句意：你知道聲音傳播很快嗎？知道，但是光比聲音傳播要快得多。Much faster than, 快得多，much用來修飾faster,表程度；a little faster than,快一點(diǎn)點(diǎn)；as fast as和…….一樣快；slower than比……要慢。很明顯A符合題意。
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