You have already seen the negative effects of light pollution on plants,animals and human health.Apart from this,the actual cost of misused light is estimated to be millions of dollars every year.After all,fossil fuels are used for producing maximum electricity.
While outdoor lighting and using artificial light fixtures are part of our modern lifestyle,simple steps will surely help in reducing light pollution.For example,while installing outdoor lighting,make sure that they are pointed downwards.Also,use only the required light fixtures for home and offices.
5.According to the passage,light pollution
.
A.is more serious than common pollution
B.only has effects on many plants and animals
C.is a kind of pollution newly put forward
D.includes natural light pollution
答案 C
解析 细节理解题。根据文章第一段的最后一句可知,光污染不仅仅影响人类,而且还影响其他生物,故B项不正确。根据文章第一段第二句话可知,“光污染”对人们来说可能是一个新的术语,因此C项正确。
6.Which is the main cause of light pollution?
A.Natural light.
B.Manmade light.
C.All kinds of light.
D.Outdoor light.
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