A.Right
B.Wrong
C.Not mentioned
2.Light pollution results entirely from the ineffective use of electric lights.
A.Right
B.Wrong
C.Not mentioned
3.Bright light from such big cities as Los Angeles has reduced the scientific value of some important observatories nearby.
A.Right
B.Wrong
C.Not mentioned
4.The Worlds night sky map created by astronomers shows that developed countries cause the largest alnount of light pollution.
A.Right
B.Wrong
C.Not mentioned
5.The last paragraph suggests that tobright a night sky deprives us of opportunities to see natural wonderful sights in the space.
A.Right
B.Wrong
C.Not mentioned
6.Air pollution is as damaging as light pollution.
A.Right
B.Wrong
C.Not mentioned
7.The big cities in China are also suffering from light pollution too.
A.Right
B.Wrong
C.Not mentioned
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