Read the following passage about How Light Pollution Threatens Our Stars and mark the letter A, B, C or D on your answer sheet to indicate t...
Đề bài
Read the following passage about How Light Pollution Threatens Our Stars and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.
The fast disappearance of stars from our night sky is becoming a serious environmental problem that needs immediate action. According to Globe at Night's research project, artificial lights have been increasing quickly; (18)_________. Had governments created better lighting rules earlier, this natural heritage might have been saved for our children. The study, which collected data from thousands of volunteers worldwide, showed that people on the ground often notice what satellites cannot see. Modern LED streetlights send out blue light sideways, creating a growing bubble of brightness over cities. (19)_________. Professional astronomers find it harder to observe space, as too much light disturbs their telescope work and research activities. Additionally, local communities lose their traditional ways of finding directions and cultural stories when stars disappear from sight.
The research results offer practical ways to reduce this problem effectively. Cities could install covered lights (20)_________. Also, warmer-colored bulbs would decrease harmful effects on both human health and animal behavior patterns clearly. Education programs must teach people about this issue; (21)_________. The night sky, a natural resource belonging to everyone, needs protection through community work and smart policies. (22)_________, unfortunately, is that many people will never see the amazing dark sky full of stars that inspired old civilizations and still makes humans curious about space today.
https://www.nsf.gov/al
Question 18:
A. as a result, people may notice the Moon more clearly in many large cities
B. therefore, future generations may see many fewer stars above them
C. consequently, the night sky will look different, even though the number of stars remains the same
D. herefore, scientists can now measure light pollution more accurately than ever before
