2. 职称英语
  3. We usually think of pollution as a harmful waste substance that threatens the

We usually think of pollution as a harmful waste substance that threatens the

游客2024-02-14  28
问题   We usually think of pollution as a harmful waste substance that threatens the air and water.【C1】______some people have become【C2】______about another kind of pollution. It can be everywhere, depending on the time of day.【C3】______it is not thought of as a【C4】______. It is light.
  The idea of light pollution has【C5】______with the increase of【C6】______in cities. In many areas, this light makes it【C7】______to observe stars and planets in the night sky. In 1922, the International Dark-Sky Association formed. This organization wants to reduce light pollution in the【C8】______sky. It also【C9】______the effective use of electric lighting.
  Light pollution is the【C10】______of wasted energy. Bright light that shines into the sky is not being used to provide light【C11】______it is needed on Earth.【C12】______designed【C13】______causes a great deal of light pollution. Lights that are brighter than【C14】______also cause light pollution.
   Most people in America are【C15】______to find out that they are not able to see our own galaxy, The Milky Way, with their own eyes.【C16】______about three-fourths of Americans cannot see the Milky Way because of【C17】______light.
  Objects in the night sky are【C18】______that provide everyone【C19】______wonder. But light pollution threatens to prevent those wonderful sights【C20】______being seen.  [br] 【C11】
选项 A、where
B、that
C、which
D、that
答案 A
解析
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