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1最佳选择题 3分

LightNightDarkStarsThousandsofpeoplearoundtheglobe

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2最佳选择题 3分

LightNightDarkStarsThousandsofpeoplearoundtheglobe

A. A haze of light is formed from artificial lights such as streetlights and building lights.
B. Lights from different sources in the city stream into space and illuminate the night sky.
C. The night sky is illuminated by the lights from big glowing cities in the night.
D. Stargazing becomes difficult because there is a layer of haze in the air.

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3最佳选择题 3分

LightNightDarkStarsThousandsofpeoplearoundtheglobe

A. Yes. Because the once dark rural areas are polluted by lights.
B. No. Because they can still see stars in rural areas.
C. Yes. Because rural areas are not a good place for astronomers to study stars.
D. No. Because faint light given off by stars can still be seen on a clear night.

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4最佳选择题 3分

LightNightDarkStarsThousandsofpeoplearoundtheglobe

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5最佳选择题 3分

LightNightDarkStarsThousandsofpeoplearoundtheglobe

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