3. Does the writer think growing cities affect astronomers work? Why does he think so?
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.
4. How does light pollution affect wildlife? Which of the following is NOT correct?
A) Animals may go off course due to the attraction of artificial lights.
B) Animals might be attracted by artificial lights to go into cities.
C) Artificial lights at night may make migrating birds lose their way.
D) Attracted by artificial lights， birds fly into lighted buildings.
5. Which of the following is closest in meaning to the title "Light Night， Dark Stars"?
A) The night sky is light colored and stars are black.
B) Lights appear at night and stars are seen in the dark.
C) City lights illuminate the night sky and make stars invisible.
D) City lights at night illuminate stars in the sky.
答案與題解：
1.C 第一段的第一句提供了答案。在沒有云，沒有月光，沒有人造光源的情況下，可以看見14，000顆星星。
2.D A、B、C所述內容均可在第二段中找到。D所表達的意思不符合原文，因為a layer of haze in the air的意思是“空氣中有一層薄霧”。
3.A 答案在第五段中可以找到。隨著城市規模的擴大，曾經黑燈瞎火的鄉村逐漸變成了市郊，那里的燈火使科學家無法觀測到星體發出的微弱光芒。
4.B 第六段最后三句告訴我們人造光源會誤導動物而致使它們迷路，但卻沒有說會將它們引進城市。
5.C 題目的意思是：城市燈火通明的夜晚使星星失去光澤。