Light travels _____ than sound.

[     ]

A. much fast
B. far fast
C. much faster
D. more faster
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【小題1】____________(study) Zhalong helps us learn about protecting wildlife.
【小題2】Some of the students___________（remove）the snow when we arrived there.
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科目：初中英語(yǔ) 來(lái)源：2011-2012學(xué)年江蘇宜興外國(guó)語(yǔ)學(xué)校初二下學(xué)期期中考試英語(yǔ)試卷（帶解析） 題型：單詞拼寫

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【小題1】____________(study) Zhalong helps us learn about protecting wildlife.
【小題2】Some of the students___________（remove）the snow when we arrived there.
【小題3】One of my classmates __________________ ( be) to the Great Wall twice.
【小題4】Father’s Day is coming, but I__________ (buy) a present for my father yet.
【小題5】Tom ____________ (live) in Nanjing for ten months in 2005.
【小題6】There__________ (be) many great changes in many areas in China since 2000.
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科目：初中英語(yǔ) 來(lái)源：2011年廣東省廣州市中考英語(yǔ)試卷（解析版） 題型：閱讀理解

When the traffic lights turn red, we will stop driving a car or crossing a street. Why is red used for traffic lights instead of other colors?

As we know, scattering (散射) happens when light goes through the air. For the same media(媒質(zhì)), if the wavelength is long, the scattering will be short. If the wavelength is short, then the scattering will be long.

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A. red    B green     C. yellow

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A. Why do accidents happen

b. How does the red light travel

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科目：初中英語(yǔ) 來(lái)源：2013屆江蘇省無(wú)錫市惠山區(qū)初二第二學(xué)期月考英語(yǔ)試卷 題型：單詞拼寫

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