And several lighting manufacturers offer dark-sky friendly lights that are specifically designed to cut down outward and upward lights. In addition, reducing wasted light saves money, energy and resources, which in turn reduces air pollution and carbon dioxide emissions caused by energy production. (295W)

　　5. How can light pollution affect migratory birds?

　　A. They will easily get lost on their way of migration.

　　B. They will change their living habits.

　　C. They cannot find food any more.

　　D. They cannot fly over tall buildings.

　　6. Chicago will dim their tall buildings at night to　.

　　A. make people sleep well

　　B. prevent birds from migration

　　C. make the night more beautiful

　　D. save birds’ lives

　　7. What Travis Long core says in the second paragraph suggests that　.

　　A. the full moon is the main cause of light pollution

　　B. the effect of the “permanent full moon” threatens birds’ survival

　　C. the full moon has done great harm to birds

　　D. the effect of the “permanent full moon” is still not clear

　　8. We can infer from the last paragraph that　.

　　A. dark-sky friendly lights are not effective enough

　　B. light pollution can worsen air pollution

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